(SINV (SINV (QT (DQL ``) (QTC (S (SBAR (IN If) (S (BASENP (NN PA-457)) (VP (VP (VBZ turns) (PRT (RP out))) (S (VP (VP (TO to) (VP (VB be) (ADJP (ADJP (JJ non-toxic)) (COMMA ,) (ADJP (JJ easy) (SBAR (S (VP (TO to) (VP (VB use))))))))) (CC and) (VP (RB not) (VP (TO to) (VP (VB select) (PP (IN for) (BASENP (NN resistance))))))))))) (COMMA ,) (S (BASENP (PRP it)) (VP (MD will) (VP (VB find) (BASENP (JJ good) (NN use)))))) (COMMA ,)) (DQR '')) (SINV (VP (VBD said)) (NP (BASENP (NNP Charles) (NNP Boucher)) (SBAR (WHNP (WP who)) (S (VP (VP (VBZ researches) (BASENP (NN HIV))) (PP (IN at) (NP (BASENP (NNP Utrecht) (NN university) (JJ medical) (NN center)) (PP (IN in) (BASENP (DT the) (NNPS Netherlands))))))))))) (PERIOD .))