(S (S (S (BASENP (DT The) (NN response)) (VP (VBZ is) (VP (VBN believed) (S (VP (TO to) (VP (VB be) (VP (VP (VBN caused) (PP (IN in) (BASENP (NN part)))) (PP (IN by) (BASENP (DT the) (NN two) (JJ current) (NN oil) (NN spill) (NNS disasters)))))))))) (PRN (LRB -LRB-) (NP (NP (BASENP (DT that)) (PP (IN of) (BASENP (DT the) (NNP Deepwater) (NNP Horizon) (NNP Incident)))) (CC and) (NP (ADVP (RBR more) (RB recently)) (BASENP (DT the) (NNP Alaska) (NN oil) (NN pipeline) (NN malfunction)))) (RRB -RRB-))) (PERIOD .))