(S (S (BASENP (PRP It)) (VP (VBZ has) (VP (VBN taken) (NP (BASENP (NN responsibility)) (PP (IN for) (NP (NP (BASENP (DT the) (NN killing)) (PP (IN of) (BASENP (DT a) (NN missionary)))) (PP (IN in) (NP (BASENP (NNP July)) (PP (IN of) (BASENP (JJ last) (NN year))))))))))) (PERIOD .))