(S (S (PP (VBG According) (PP (TO to) (NP (NP (BASENP (NNS witnesses)) (COMMA ,) (NP (BASENP (NNS members)) (PP (IN of) (BASENP (DT the) (NNP Taliban))))) (CC and) (NP (BASENP (NNS officials)) (PP (IN from) (NP (BASENP (DT the) (NNP US)) (CC and) (BASENP (NNP Afghanistan)))))))) (COMMA ,) (S (BASENP (DT the) (NNP Chinook)) (VP (VBD was) (VP (VP (ADVP (RB deliberately)) (VBN targeted)) (COMMA ,) (PP (ADVP (RB apparently)) (PP (IN by) (NP (BASENP (DT a) (ADJP (NN rocket) (VBN propelled)) (NN grenade)) (PRN (LRB -LRB-) (BASENP (NN RPG)) (RRB -RRB-))))))))) (PERIOD .))