(S (S (BASENP (NNP Christie)) (VP (VBD was) (VP (ADVP (RB further)) (VP (VBN questioned) (PP (IN over) (NP (BASENP (PRPD his) (JJ ongoing) (NNS conflicts)) (PP (IN with) (BASENP (NNS teachers) (NNS unions))))))))) (PERIOD .))