Predicate: flood
Roleset id: flood.01 , move like water, vncls: 47.2
Roles:
        Arg1: substance (ie, water
        Arg2: endpoint
        Arg3: startpoint
Example: autogen1
        a flood of selling by other investors
        Rel : flood
        Arg1 : of selling by other investors
Example: autogen2
        the selling flood
        Arg1 : selling
        Rel : flood