sentence1_binary_parse: ( ( Weather ( ( conditions and ) precipitation ) ) ( also ( ( must ( be considered ) ) . ) ) )
sentence1_parse: (ROOT (S (NP (JJ Weather) (NNS conditions) (CC and) (NNS precipitation)) (ADVP (RB also)) (VP (MD must) (VP (VB be) (VP (VBN considered)))) (. .)))
sentence1: Weather conditions and precipitation also must be considered.
sentence2_parse: (ROOT (NP (NP (NP (NNP Precipitation)) (ADJP (RB commonly) (JJ occur))) (PRN (-LRB- -LRB-) (PRP s) (-RRB- -RRB-)) (PP (IN along) (NP (DT a) (JJ cold) (NN front))) (. .)))
sentence2: Precipitation commonly occur(s) along a cold front.