(S (NP (BASENP (DT The) (NNS blockades)) (PRN (COMMA ,) (NP (ADVP (RB surely)) (NP (BASENP (DT a) (NN catalyst)) (PP (IN for) (BASENP (JJ violent) (NNP Hamas) (NNS attacks))))) (COMMA ,))) (VP (VBP have) (VP (VBN been) (VP (VP (VBN condemned) (PP (IN by) (BASENP (NNP Human) (NNPS Rights) (NNP Watch)))) (PP (IN as) (NP (DT a) (QT (DQL ``) (QTC (NP (BASENP (NN violation)) (PP (IN of) (BASENP (JJ international) (JJ humanitarian) (NN law)))) (PERIOD .)) (DQR ''))))))))