(S (S (BASENP (DT The) (NNP Taliban)) (VP (VBD was) (NP (BASENP (DT the) (NN group)) (SBAR (WHNP (WDT that)) (S (VP (VBD claimed) (NP (BASENP (NNS responsibility)) (PP (IN for) (BASENP (DT the) (NN attack)))))))))) (PERIOD .))