(S (COLON :) (QT (DQL ``) (QTC (S (BASENP (PRP We)) (VP (VP (VBD left) (BASENP (DT the) (NN alleyway))) (CC and) (VP (ADVP (RB once) (RB again)) (VP (VP (VBD walked) (PRT (RP down))) (BASENP (DT the) (JJ busy) (NN road)))))) (PERIOD .)) (DQR '')))