(S (S (S (PP (IN Before) (S (VP (VBG heading) (PP (IN onto) (BASENP (DT the) (ADJP (RB already) (VBN broken)) (NN ice)))))) (COMMA ,) (S (BASENP (PRP they)) (VP (VP (VP (VBD made) (BASENP (DT a) (JJ makeshift) (NN bridge))) (PP (IN from) (BASENP (JJ wooden) (NNS pallets)))) (S (VP (TO to) (VP (VB get) (PP (PP (TO to) (CC and) (IN from)) (BASENP (DT the) (NN shore))))))))) (CONJP (COMMA ,) (CC but)) (S (S (BASENP (DT the) (NN ice)) (VP (VBD shifted))) (CC and) (S (BASENP (DT the) (NN bridge)) (VP (VBD was) (VP (VBN destroyed)))))) (PERIOD .))