Predicate: storage
Roleset id: storage.01 , store, vncls: 15.2
Roles:
        Arg0: storer
        Arg1: commodity
        Arg2: beneficiary
Example: autogen1
        data storage disks for computers
        Arg1 : data
        Rel : storage
        Arg0 : disks
        Arg2 : for computers
Example: autogen2
        data storage
        Arg1 : data
        Rel : storage