(S (S (NP (BASENP (DT The) (NNS by-elections)) (PP (IN in) (BASENP (NNP Henley)))) (VP (VBD were) (VP (VP (VP (VBN won) (PP (IN by) (BASENP (NNP Tory) (NNP John) (NNP Howell)))) (PP (IN with) (NP (BASENP (DT a) (NN majority)) (PP (IN of) (BASENP (QP (RB over) (NN 10,000)) (NNS votes)))))) (COMMA ,) (S (VP (VP (VBG defeating) (PP (IN by) (BASENP (DT a) (JJ large) (NN margin)))) (NP (BASENP (DT the) (NNP Liberal) (NNPS Democrats)) (SBAR (WHNP (WP who)) (S (VP (VBD were) (VP (VBN presumed) (S (VP (TO to) (VP (VB have) (NP (BASENP (DT a) (JJ close) (NN edge)) (PP (IN of) (S (VP (VBG beating) (BASENP (CC both) (NNPS Conservatives) (CC and) (NNP Labor))))))))))))))))))) (PERIOD .))