wrong output of ArkrefClient - coreference resolver

[oferbr]

eu.excitementproject.eop.lap.biu.en.coreference.arkref.ArkrefClient seems to output redundant (and maybe just wrong) mentions, returned by getArkrefOutput() (and not by get getArkrefDockedOutput(), which is computed separately, and seems to work fine).

For instance, run eu.excitementproject.eop.lap.biu.en.coreference.arkref.ArkrefCoreferenceResolversTests, test1 (the output is down here). The problem is in TREE COREFERENCE INFORMATION. For instance, group #10 has a mention that is only a comma, which doesn't make sense, and also is not part of the docked output. Another example is in group #12, which has a mention that is only the word "and", and again this doesn't make sense and is not part of the docked output.

** NOTE - when this is solved, the coreference functionality must be added to eu.excitementproject.eop.lap.biu.uima.CasTreeConverter (and its tests in CasTreeConverterTester, CasTreeConverterTest). Otherwise, BIUTEE cannot use coreference at all.

----------------------- output of ArkrefCoreferenceResolversTests.test1 -----------------
TEXT:
Prince George of Cambridge (George Alexander Louis, born 22 July 2013) is the only child of Prince William, Duke of Cambridge, and his wife Catherine, Duchess of Cambridge. He is the only grandchild of Charles, Prince of Wales, and is third in line to succeed his great-grandmother, Queen Elizabeth II, after his grandfather and father.

TEXT TREES:
(ROOT / (null)[(null)] / (null) / (null))
(10 / born[bear] / VBD / (null))
(2 / George[george] / NNP / nsubj)
(1 / Prince[prince] / NNP / nn)
(3 / of[of] / IN / prep)
(8 / Louis[louis] / NNP / pobj)
(4 / Cambridge[cambridge] / NNP / nn)
(5 / -LRB-[-lrb-] / -LRB- / punct)
(6 / George[george] / NNP / nn)
(7 / Alexander[alexander] / NNP / nn)
(9 / ,[,] / , / punct)
(11 / 22[22] / CD / dobj)
(12 / July[july] / NNP / tmod)
(13 / 2013[2013] / CD / num)
(14 / -RRB-[-rrb-] / -RRB- / punct)
(18 / child[child] / NN / dobj)
(15 / is[be] / VBZ / cop)
(16 / the[the] / DT / det)
(17 / only[only] / JJ / amod)
(19 / of[of] / IN / prep)
(21 / William[william] / NNP / pobj)
(20 / Prince[prince] / NNP / nn)
(22 / ,[,] / , / punct)
(23 / Duke[duke] / NNP / conj)
(24 / of[of] / IN / prep)
(25 / Cambridge[cambridge] / NNP / pobj)
(26 / ,[,] / , / punct)
(27 / and[and] / CC / cc)
(29 / wife[wife] / NN / conj)
(28 / his[his] / PRP$ / poss)
(32 / Duchess[duchess] / NNP / appos)
(30 / Catherine[catherine] / NNP / nn)
(31 / ,[,] / , / punct)
(33 / of[of] / IN / prep)
(34 / Cambridge[cambridge] / NNP / pobj)
(35 / .[.] / . / punct)
(ROOT / (null)[(null)] / (null) / (null))
(5 / grandchild[grandchild] / NN / (null))
(1 / He[he] / PRP / nsubj)
(2 / is[be] / VBZ / cop)
(3 / the[the] / DT / det)
(4 / only[only] / JJ / amod)
(6 / of[of] / IN / prep)
(7 / Charles[charles] / NNP / pobj)
(8 / ,[,] / , / punct)
(9 / Prince[prince] / NNP / appos)
(10 / of[of] / IN / prep)
(11 / Wales[wales] / NNP / pobj)
(12 / ,[,] / , / punct)
(13 / and[and] / CC / cc)
(15 / third[third] / JJ / conj)
(14 / is[be] / VBZ / cop)
(16 / in[in] / IN / prep)
(17 / line[line] / NN / pobj)
(19 / succeed[succeed] / VB / infmod)
(18 / to[to] / TO / aux)
(21 / great-grandmother[great-grandmother] / NN / dobj)
(20 / his[his] / PRP$ / poss)
(22 / ,[,] / , / punct)
(25 / II[ii] / NNP / appos)
(23 / Queen[queen] / NNP / nn)
(24 / Elizabeth[elizabeth] / NNP / nn)
(26 / ,[,] / , / punct)
(27 / after[after] / IN / prep)
(29 / grandfather[grandfather] / NN / pobj)
(28 / his[his] / PRP$ / poss)
(30 / and[and] / CC / cc)
(31 / father[father] / NN / conj)
(32 / .[.] / . / punct)

TREE COREFERENCE INFORMATION:
TreeCoreferenceInformation - coref groups and their members:
group #1:
* (1 / Prince[prince] / NNP / nn)
* (21 / William[william] / NNP / pobj)
(20 / Prince[prince] / NNP / nn)
(22 / ,[,] / , / punct)
(23 / Duke[duke] / NNP / conj)
(24 / of[of] / IN / prep)
(25 / Cambridge[cambridge] / NNP / pobj)
(26 / ,[,] / , / punct)
(27 / and[and] / CC / cc)
(29 / wife[wife] / NN / conj)
(28 / his[his] / PRP$ / poss)
(32 / Duchess[duchess] / NNP / appos)
(30 / Catherine[catherine] / NNP / nn)
(31 / ,[,] / , / punct)
(33 / of[of] / IN / prep)
(34 / Cambridge[cambridge] / NNP / pobj)
group #2:
* (10 / born[bear] / VBD / (null))
(2 / George[george] / NNP / nsubj)
(1 / Prince[prince] / NNP / nn)
(3 / of[of] / IN / prep)
(8 / Louis[louis] / NNP / pobj)
(4 / Cambridge[cambridge] / NNP / nn)
(5 / -LRB-[-lrb-] / -LRB- / punct)
(6 / George[george] / NNP / nn)
(7 / Alexander[alexander] / NNP / nn)
(9 / ,[,] / , / punct)
(11 / 22[22] / CD / dobj)
(12 / July[july] / NNP / tmod)
(13 / 2013[2013] / CD / num)
(14 / -RRB-[-rrb-] / -RRB- / punct)
(18 / child[child] / NN / dobj)
(15 / is[be] / VBZ / cop)
(16 / the[the] / DT / det)
(17 / only[only] / JJ / amod)
(19 / of[of] / IN / prep)
(21 / William[william] / NNP / pobj)
(20 / Prince[prince] / NNP / nn)
(22 / ,[,] / , / punct)
(23 / Duke[duke] / NNP / conj)
(24 / of[of] / IN / prep)
(25 / Cambridge[cambridge] / NNP / pobj)
(26 / ,[,] / , / punct)
(27 / and[and] / CC / cc)
(29 / wife[wife] / NN / conj)
(28 / his[his] / PRP$ / poss)
(32 / Duchess[duchess] / NNP / appos)
(30 / Catherine[catherine] / NNP / nn)
(31 / ,[,] / , / punct)
(33 / of[of] / IN / prep)
(34 / Cambridge[cambridge] / NNP / pobj)
(35 / .[.] / . / punct)
group #3:
* (3 / of[of] / IN / prep)
(8 / Louis[louis] / NNP / pobj)
(4 / Cambridge[cambridge] / NNP / nn)
(5 / -LRB-[-lrb-] / -LRB- / punct)
(6 / George[george] / NNP / nn)
(7 / Alexander[alexander] / NNP / nn)
* (9 / ,[,] / , / punct)
* (29 / wife[wife] / NN / conj)
(28 / his[his] / PRP$ / poss)
(32 / Duchess[duchess] / NNP / appos)
(30 / Catherine[catherine] / NNP / nn)
(31 / ,[,] / , / punct)
(33 / of[of] / IN / prep)
(34 / Cambridge[cambridge] / NNP / pobj)
group #4:
* (4 / Cambridge[cambridge] / NNP / nn)
group #5:
* (5 / -LRB-[-lrb-] / -LRB- / punct)
* (14 / -RRB-[-rrb-] / -RRB- / punct)
* (18 / child[child] / NN / dobj)
(15 / is[be] / VBZ / cop)
(16 / the[the] / DT / det)
(17 / only[only] / JJ / amod)
(19 / of[of] / IN / prep)
(21 / William[william] / NNP / pobj)
(20 / Prince[prince] / NNP / nn)
(22 / ,[,] / , / punct)
(23 / Duke[duke] / NNP / conj)
(24 / of[of] / IN / prep)
(25 / Cambridge[cambridge] / NNP / pobj)
(26 / ,[,] / , / punct)
(27 / and[and] / CC / cc)
(29 / wife[wife] / NN / conj)
(28 / his[his] / PRP$ / poss)
(32 / Duchess[duchess] / NNP / appos)
(30 / Catherine[catherine] / NNP / nn)
(31 / ,[,] / , / punct)
(33 / of[of] / IN / prep)
(34 / Cambridge[cambridge] / NNP / pobj)
* (5 / grandchild[grandchild] / NN / (null))
(1 / He[he] / PRP / nsubj)
(2 / is[be] / VBZ / cop)
(3 / the[the] / DT / det)
(4 / only[only] / JJ / amod)
(6 / of[of] / IN / prep)
(7 / Charles[charles] / NNP / pobj)
(8 / ,[,] / , / punct)
(9 / Prince[prince] / NNP / appos)
(10 / of[of] / IN / prep)
(11 / Wales[wales] / NNP / pobj)
(12 / ,[,] / , / punct)
(13 / and[and] / CC / cc)
(15 / third[third] / JJ / conj)
(14 / is[be] / VBZ / cop)
(16 / in[in] / IN / prep)
(17 / line[line] / NN / pobj)
(19 / succeed[succeed] / VB / infmod)
(18 / to[to] / TO / aux)
(21 / great-grandmother[great-grandmother] / NN / dobj)
(20 / his[his] / PRP$ / poss)
(22 / ,[,] / , / punct)
(25 / II[ii] / NNP / appos)
(23 / Queen[queen] / NNP / nn)
(24 / Elizabeth[elizabeth] / NNP / nn)
(26 / ,[,] / , / punct)
(27 / after[after] / IN / prep)
(29 / grandfather[grandfather] / NN / pobj)
(28 / his[his] / PRP$ / poss)
(30 / and[and] / CC / cc)
(31 / father[father] / NN / conj)
(32 / .[.] / . / punct)
group #6:
* (11 / 22[22] / CD / dobj)
group #7:
* (12 / July[july] / NNP / tmod)
(13 / 2013[2013] / CD / num)
group #8:
* (23 / Duke[duke] / NNP / conj)
(24 / of[of] / IN / prep)
(25 / Cambridge[cambridge] / NNP / pobj)
* (28 / his[his] / PRP$ / poss)
group #9:
* (6 / of[of] / IN / prep)
(7 / Charles[charles] / NNP / pobj)
(8 / ,[,] / , / punct)
(9 / Prince[prince] / NNP / appos)
(10 / of[of] / IN / prep)
(11 / Wales[wales] / NNP / pobj)
group #10:
* (8 / ,[,] / , / punct)
* (21 / great-grandmother[great-grandmother] / NN / dobj)
(20 / his[his] / PRP$ / poss)
(22 / ,[,] / , / punct)
(25 / II[ii] / NNP / appos)
(23 / Queen[queen] / NNP / nn)
(24 / Elizabeth[elizabeth] / NNP / nn)
(26 / ,[,] / , / punct)
group #11:
* (11 / Wales[wales] / NNP / pobj)
group #12:
* (13 / and[and] / CC / cc)
* (29 / grandfather[grandfather] / NN / pobj)
(28 / his[his] / PRP$ / poss)
(30 / and[and] / CC / cc)
(31 / father[father] / NN / conj)
group #13:
* (17 / line[line] / NN / pobj)
(19 / succeed[succeed] / VB / infmod)
(18 / to[to] / TO / aux)
(21 / great-grandmother[great-grandmother] / NN / dobj)
(20 / his[his] / PRP$ / poss)
(22 / ,[,] / , / punct)
(25 / II[ii] / NNP / appos)
(23 / Queen[queen] / NNP / nn)
(24 / Elizabeth[elizabeth] / NNP / nn)
(26 / ,[,] / , / punct)

DOCKED COREFERENCE INFORMATION:
[DockedMention(tag=19_21, span=<260..302>, text=his great-grandmother, Queen Elizabeth II,), DockedMention(tag=19_21, span=<283..301>, text=Queen Elizabeth II)]
[DockedMention(tag=1_6_14_15_20_23, span=<0..70>, text=Prince George of Cambridge (George Alexander Louis, born 22 July 2013)), DockedMention(tag=1_6_14_15_20_23, span=<74..171>, text=the only child of Prince William, Duke of Cambridge, and his wife Catherine, Duchess of Cambridge), DockedMention(tag=1_6_14_15_20_23, span=<173..175>, text=He), DockedMention(tag=1_6_14_15_20_23, span=<179..226>, text=the only grandchild of Charles, Prince of Wales), DockedMention(tag=1_6_14_15_20_23, span=<260..263>, text=his), DockedMention(tag=1_6_14_15_20_23, span=<309..312>, text=his)]
[DockedMention(tag=8_11, span=<108..125>, text=Duke of Cambridge), DockedMention(tag=8_11, span=<131..134>, text=his)]
[DockedMention(tag=10_12, span=<131..171>, text=his wife Catherine, Duchess of Cambridge), DockedMention(tag=10_12, span=<135..139>, text=wife)]
[DockedMention(tag=2_9_13, span=<17..26>, text=Cambridge), DockedMention(tag=2_9_13, span=<116..125>, text=Cambridge), DockedMention(tag=2_9_13, span=<162..171>, text=Cambridge)]