(S (S (CC And) (S (PP (IN in) (BASENP (NN two) (NNS seconds))) (COMMA ,) (S (S (BASENP (PRP we)) (VP (VBD heard) (BASENP (DT the) (NN noise)))) (CC and) (S (BASENP (NNS things)) (VP (VBD started) (S (VP (TO to) (VP (VB shake))))))))) (PERIOD .))