( ( Also ( if ( clouds ( are ( ( ( forced ( ( up and ) over ) ) ( a ( mountain range ) ) ) ( by ( ( prevailing ( winds ( ( the cooling ) ( of ( the ( air mass ) ) ) ) ) ) ( as ( it rises ) ) ) ) ) ) ) ) ) ( ( can ( cause ( condensation ( then precipitation ) ) ) ) . ) )
(ROOT (S (SBAR (ADVP (RB Also)) (IN if) (S (NP (NNS clouds)) (VP (VBP are) (VP (VBN forced) (PRT (RP up) (CC and) (RP over)) (NP (DT a) (NN mountain) (NN range)) (PP (IN by) (S (VP (VBG prevailing) (S (NP (NNS winds)) (NP (NP (DT the) (NN cooling)) (PP (IN of) (NP (DT the) (NN air) (NN mass))))) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ rises))))))))))) (VP (MD can) (VP (VB cause) (NP (NP (NN condensation)) (VP (ADVP (RB then)) (VBN precipitation))))) (. .)))
Also if clouds are forced up and over a mountain range by prevailing winds the cooling of the air mass as it rises can cause condensation then precipitation.
(ROOT (S (NP (NN Chinook) (NNS winds)) (VP (VBP occur) (SBAR (WHADVP (WRB when)) (S (NP (NN air)) (VP (VBZ is) (VP (VBN forced) (PP (IN over) (NP (DT a) (NN mountain) (NN range)))))))) (. .)))