( ( ( A ( mountain stream ) ) ( in spring ) ) ( ( ( is ( often ( ( opaque and ) milky ) ) ) ( with ( suspended sediment ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (NN mountain) (NN stream)) (PP (IN in) (NP (NN spring)))) (VP (VBZ is) (ADJP (RB often) (JJ opaque) (CC and) (JJ milky)) (PP (IN with) (NP (VBN suspended) (NN sediment)))) (. .)))
A mountain stream in spring is often opaque and milky with suspended sediment.
(ROOT (S (NP (NNS Streams)) (ADVP (RB often)) (VP (VBP start) (PP (IN in) (NP (NNS mountains)))) (. .)))