(S (S (NP (BASENP (NNP UN) (NNS peacekeepers)) (PRN (COMMA ,) (SBAR (WHNP (WP whom)) (S (VP (VP (VBD arrived) (PP (IN in) (BASENP (NNP Haiti)))) (PP (IN after) (BASENP (DT the) (JJ 2010) (NN earthquake)))))) (COMMA ,))) (VP (VBP are) (VP (VBG being) (VP (VBN blamed) (PP (IN for) (NP (NP (BASENP (DT the) (NN spread)) (PP (IN of) (BASENP (DT the) (NN disease)))) (SBAR (WHNP (WDT which)) (S (VP (VBD started) (PP (IN near) (NP (BASENP (DT the) (NN troop) (POS 's)) (NN encampment)))))))))))) (PERIOD .))