Predicate: mitoEar~af
Roleset id: 01 , to know or recognize
        Arg1: knower
        Arg2: thing known or thought
Frame:
هم متعرفين * على بعض من زمان
        Arg1 : * هم
        Gloss: they
        Arg2 : على بعض
        Gloss: to each other
        Arg3 : من زمان
        Gloss: a long time ago