Cannot create named blank node as subject

[bjdmeest]

Issue type: 🐛 Bug

Description

I wanna build something like https://rml.io/test-cases/#rmltc0001b-csv , but YARRRML below doesn't contain the termtype

Steps

mappings:
  loc:
    s:
      value: $(ID)_$(loc)
      type: blank

becomes (snippet)

map:s_000 rml:reference "firstname" ;
	rdf:type rr:SubjectMap .

Environment

Matey, and latest yarrrml-parser (1.5.2)

[Melchyore]

Hey! I'm running into the same issue. It works for the objects, but not for the subjects.

[namedgraph]

Isn't there a way to use blank nodes as subjects?...