post composition annotation

Page to write about the post composition of annotations for data in supplemental .ttl files.

I had been experimenting with post com-positionally creating annotations, for example for the global_chlorophyll_a.csv dataset, when annotating a data column about haptophyta chlorophyll a, instead of making a new class for haptophyta chlorophyll a, I made a blank node by which to annotate the column. The blank node works and is parsed into the conjunctive graph in a python script.

#HaptophytaChlA column is about an owl class which is a subclass of chlorophyll a and is part of some Coccolithale
file:HaptophytaChlA obo:IAO_0000136 _:b4 .

_:b4 rdf:type owl:Class ;
	rdfs:subClassOf obo:CHEBI_18230,
		[obo:BFO_0000050 obo:NCBITaxon_418917] .

which is parsed into the datastore graph and expressed in ttl as:

ns1:global_chlorophyll_a.csvHaptophytaChlA rdfs:label "Haptophyta Chl A" ;
    obo:IAO_0000136 [ a owl:Class ;
            rdfs:subClassOf [ obo:BFO_0000050 obo:NCBITaxon_418917 ],
                obo:CHEBI_18230 ] ;
    ns2:rfc4180columnPosition 7 .

See the end of the log from this day: 28.11.17.

###//TODO: I need to check if I can query for a data about this column using the blank node annotation.

What I'd like to do is post-compositionally annotate classes to be in the same format as is done by owl to add annotation properties to it's classes. This way querying against ontology and querying post-compositionally annotated data can be done in the same way, which makes my scripts more standard and powerful.