prefixes:
  grel: http://users.ugent.be/~bjdmeest/function/grel.ttl#
  idlab-fn: https://w3id.org/imec/idlab/function#

mappings:
  person:
    sources:
     - table: test
       queryFormulation: mysql
    subject: http://example.org/$(firstname)
    predicateobjects:
     - predicates: foaf:firstName
       objects: $(firstname)
       condition:
        function: idlab-fn:equal
        parameters:
         - [grel:valueParameter, $(firstname)]
         - [grel:valueParameter2, "test"]