(S (S (BASENP (NNP Rudd)) (VP (ADVP (RB also)) (VP (VP (VBD used) (BASENP (DT the) (NN debate))) (S (VP (TO to) (VP (VP (VB take) (BASENP (DT a) (JJ firm) (NN stance))) (PP (IN on) (BASENP (JJ same-sex) (NN marriage))))))))) (PERIOD .))