(S (S (S (BASENP (PRP It)) (VP (VBD was) (VP (VBG snowing)))) (CONJP (COMMA ,) (CC but)) (S (BASENP (PRP they)) (VP (VBD were) (ADJP (JJ able) (S (VP (TO to) (VP (VP (VB reach) (NP (BASENP (DT the) (NN border)) (PP (IN of) (BASENP (DT the) (NN village))))) (PP (IN because) (PP (IN of) (NP (BASENP (DT the) (JJ four-wheel-drive) (NN jeep)) (SBAR (S (BASENP (PRP they)) (VP (VBD were) (VP (VBG traveling) (PP (IN in)))))))))))))))) (PERIOD .))