Remove extra # symbol from IRIs of some taxonomic rank terms?

[allenbaron]

Three taxonomic rank terms appear to have an extra # in their IRIs:

1. http://purl.obolibrary.org/obo/NCBITaxon#_species_group
2. http://purl.obolibrary.org/obo/NCBITaxon#_species_subgroup
3. http://purl.obolibrary.org/obo/NCBITaxon#_taxonomic_rank

All other taxonomic rank IRIs use the prefix http://purl.obolibrary.org/obo/NCBITaxon_.

Should the extra # be removed from these IRIs?

Noting that none of the taxonomic rank terms have IRIs that resolve.

[balhoff]

Should NCBITaxon use identifiers from the OBO TAXRANK ontology?

• species_group
• species_subgroup
• taxonomic_rank

[cmungall]

taxrank is probably a bigger decision, but I think it makes sense. Made a distinct issue #97

The odd URI issue is an unfortunate but known consequence of

• how we decided to model the URIs for the subsets
• how these are translated into obo format

It was probably a mistake for us to place the subsets directly in the NCBITaxon namespace, we don't own this. Should have been done the same way as go/uberon/doid/etc, which is suboptimal but predictable.

The decision is

1. leave as is for now and make a bigger change to taxrank (Switch to taxrank for ranks, and decide on the metamodel #97) later
2. change the namespace for the subset to be obo:ncbitaxon# (fixing the weirdness issue)