(S (S (PP (VBG According) (PP (TO to) (BASENP (NNP MST) (NN camp) (NNS leaders)))) (S (BASENP (DT the) (NNS gunfighters)) (VP (VP (VP (VBD set) (BASENP (NN fire))) (PP (TO to) (BASENP (NNP MST) (NNS tents)))) (CC and) (VP (VBD started) (S (VP (VBG shooting))))))) (PERIOD .))