[tracker/wip/jfelder/track-artist-ontology: 2/2] ontologies: Change nmm:performer to a multivalued property

[Jean Felder <jfelder src gnome org>]

commit bd62551b21286448111c3bfa5eb69c4fa6811ee3
Author: Jean Felder <jfelder src gnome org>
Date:   Sun May 31 21:33:28 2020 +0200

    ontologies: Change nmm:performer to a multivalued property
    
    A nmm:MusicPiece can have multiple peformers. This matches the
    behavior of the original nepomuk ontology.

 src/ontologies/nepomuk/38-nmm.ontology | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/src/ontologies/nepomuk/38-nmm.ontology b/src/ontologies/nepomuk/38-nmm.ontology
index 9c0e73b86..7ee068d38 100644
--- a/src/ontologies/nepomuk/38-nmm.ontology
+++ b/src/ontologies/nepomuk/38-nmm.ontology
@@ -142,12 +142,10 @@ nmm:artist a rdf:Property ;
        rdfs:domain nmm:MusicPiece ;
        rdfs:range nmm:Artist ;
 
-# Todo: change cardinality
 nmm:performer a rdf:Property ;
        rdfs:label "Performer" ;
        rdfs:comment "Performer" ;
        rdfs:subPropertyOf nco:contributor ;
-       nrl:maxCardinality 1 ;
        rdfs:domain nmm:MusicPiece ;
        rdfs:range nmm:Artist ;
        tracker:weight 4 ;