( ( the ( mountain streams ) ) ( ( are ( rich ( in trout ) ) ) . ) )
(ROOT (S (NP (DT the) (NN mountain) (NN streams)) (VP (VBP are) (ADJP (JJ rich) (PP (IN in) (NP (NNS trout))))) (. .)))
the mountain streams are rich in trout.
(ROOT (S (NP (NNS Streams)) (ADVP (RB often)) (VP (VBP start) (PP (IN in) (NP (NNS mountains)))) (. .)))