Converting "external ID" annotations

[juliakozlovsky]

When converting an annotation of ExternalID with bel2rdf, the annotation does not get converted.

Example:
SET ExternalID = "123456"
SET Evidence = "some string"
SET Citation = {"PubMed","Some Article"}
SET Species = "9606"
transcriptionalActivity(complexAbundance(complexNamespace:"ComplexName")) association rnaAbundance(SPAC:ProteinID)

The ExternalID field is not in the resulting .ttl file