add a getFirstWord() utility function.
add a getFirstWord() utility function.

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