5 Although some verbs are ambiguous (e.g., the verb "play" may express several relations: mu-sicianPlaysMusicalInstrument, athletePlaysSport, actorPlaysMovie, etc), knowing the types of the verbs' arguments can help disambiguate the verbs (e.g., the verb "play" that takes a musicalInstrument type as object is more likely to express the musicianPlaysMusicalInstrument relation).
we incorporate argument type checking in our EM process to ensure that it maps verbs to relations whose argument types match: • In the E-Step, we make sure that unlabeled instances are only labeled with relations that have the same argument types as the instance and that share some verbs with the instance.