( Climate ( ( is ( ( the ( average weather ) ) ( over ( a ( long ( time period ) ) ) ) ) ) . ) )
(ROOT (S (NP (NN Climate)) (VP (VBZ is) (NP (NP (DT the) (JJ average) (NN weather)) (PP (IN over) (NP (DT a) (JJ long) (NN time) (NN period))))) (. .)))
Climate is the average weather over a long time period.
(ROOT (S (NP (NN Climate)) (VP (VBZ is) (NP (NP (DT the) (JJ long-term) (NN average)) (PP (IN of) (NP (NP (NN weather)) (PP (IN in) (NP (DT a) (JJ particular) (NN spot))))))) (. .)))