Particularly low accuracy with passive sentences without complements

[fatihbozdag]

Greetings all,

Has anyone noticed particularly low accuracy with passive sentences? Also, the parser acts strangely in those cases.

For instance:
Great results with

The participants' answers were looked at for general trends that might identify the differences in these emotions. 
{'Ground': "The participants'answers", 'Verb': 'look', 'Phenomenon': 'at for general trends that might identify the differences in these emotions'}

Also great with:

for example, specific words and phrases were looked for their accuracy.
{'Ground': "specific words and phrases", 'Verb': 'look', 'Phenomenon': 'for their accuracy'}
However: 

specific words and phrases were looked for
{'Sought_entity': 'for', 'Verb': 'look'}

P.S. I use my custom script to replace trigger_location with the actual verb, but this is handled after frame annotation.