Predicate: stream
Roleset id: stream.01 , move like water, vncls: 47.2
Roles:
        Arg1: substance (ie, water
        Arg2: endpoint
        Arg3: startpoint
Example: autogen1
        the earnings stream
        Arg1 : earnings
        Rel : stream
Example: autogen2
        a broad stream of raw data
        Rel : stream
        Arg1 : of raw data