Avoid NullPointerException if GENDER is unknown.
Avoid NullPointerException if GENDER is unknown.

ainishdave/relex,AmeBel/relex,opencog/relex,virneo/relex,williampma/relex,opencog/relex,virneo/relex,anitzkin/relex,rodsol/relex-temp,linas/relex,ainishdave/relex,leungmanhin/relex,ainishdave/relex,leungmanhin/relex,anitzkin/relex,anitzkin/relex,AmeBel/relex,virneo/relex,leungmanhin/relex,williampma/relex,linas/relex,linas/relex,virneo/relex,rodsol/relex,rodsol/relex-temp,williampma/relex,opencog/relex,rodsol/relex,rodsol/relex-temp,AmeBel/relex,williampma/relex,rodsol/relex-temp,anitzkin/relex,rodsol/relex-temp,anitzkin/relex,rodsol/relex,rodsol/relex,ainishdave/relex