(S (S (NP (BASENP (DT The) (NNS remains)) (PP (IN of) (NP (BASENP (DT a) (NN trailer)) (SBAR (S (BASENP (PRP it)) (VP (VBD was) (VP (VBG towing)))))))) (VP (MD can) (VP (VB be) (VP (VBN seen) (S (VP (ADVP (RB still)) (VP (VBN attached) (PP (IN at) (NP (BASENP (DT the) (NN rear)) (PP (IN of) (BASENP (DT the) (NN coach)))))))))))) (PERIOD .))