(S (S (S (NP (BASENP (DT A) (NN door)) (PP (TO to) (BASENP (DT the) (NN attic)))) (VP (VBD was) (VP (VBN locked)))) (CC and) (S (BASENP (NNS people)) (VP (VP (MD could) (RB not)) (VP (VB escape) (PP (IN through) (BASENP (DT an) (JJ emergency) (NN exit))))))) (PERIOD .))