Predicate: signing
Roleset id: signing.01 , affix a signature, vncls: 25.1
Roles:
        Arg0: signer
        Arg1: document
        Arg2: signature
Example: autogen1
        the signing of a commercial lease
        Rel : signing
        Arg1 : of a commercial lease
Example: autogen2
        the signing of a comprehensive labor agreement
        Rel : signing
        Arg1 : of a comprehensive labor agreement