( ( If ( ( the conditions ) ( ( are not ) ( cold enough ) ) ) ) ( , ( ( the precipitation ) ( ( will ( be rain ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (DT the) (NNS conditions)) (VP (VBP are) (RB not) (ADJP (JJ cold) (RB enough))))) (, ,) (NP (DT the) (NN precipitation)) (VP (MD will) (VP (VB be) (NP (NN rain)))) (. .)))
If the conditions are not cold enough, the precipitation will be rain.
(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))) (. .)))
Precipitation commonly occur(s) along a cold front.