fix negative rule
fix negative rule

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