( ( ( A ( mountain stream ) ) ( with ( a mission ) ) ) . )
(ROOT (NP (NP (DT A) (NN mountain) (NN stream)) (PP (IN with) (NP (DT a) (NN mission))) (. .)))
A mountain stream with a mission.
(ROOT (S (NP (NNS Streams)) (ADVP (RB often)) (VP (VBP start) (PP (IN in) (NP (NNS mountains)))) (. .)))