replaced prep() with pobj()
replaced prep() with pobj()

ainishdave/relex,AmeBel/relex,AmeBel/relex,ainishdave/relex,rodsol/relex,virneo/relex,virneo/relex,virneo/relex,leungmanhin/relex,opencog/relex,williampma/relex,leungmanhin/relex,williampma/relex,linas/relex,ainishdave/relex,AmeBel/relex,williampma/relex,opencog/relex,rodsol/relex,ainishdave/relex,williampma/relex,linas/relex,linas/relex,rodsol/relex,rodsol/relex,leungmanhin/relex,virneo/relex,opencog/relex