( I ( once ( ( ( ( encountered ( some ( US Marines ) ) ) ( from ( the ( Mountain ( Warfare ( Training Center ) ) ) ) ) ) ( near ( Bridgeport ( , California ) ) ) ) . ) ) )
(ROOT (S (NP (PRP I)) (ADVP (RB once)) (VP (VBD encountered) (NP (DT some) (NNP US) (NNPS Marines)) (PP (IN from) (NP (DT the) (NNP Mountain) (NNP Warfare) (NNP Training) (NNP Center))) (PP (IN near) (NP (NNP Bridgeport) (, ,) (NNP California)))) (. .)))
I once encountered some US Marines from the Mountain Warfare Training Center near Bridgeport, California.
(ROOT (S (NP (NNS Scientists)) (VP (VBP know) (SBAR (IN that) (S (NP (DT some) (NNS mountains)) (VP (VBD were) (ADVP (RB once)) (PP (IN at) (NP (NP (DT the) (NN bottom)) (PP (IN of) (NP (DT an) (NN ocean))))) (SBAR (IN because) (S (NP (JJ marine) (NNS fossils)) (VP (VBP have) (VP (VBN been) (VP (VBN found) (PP (IN on) (NP (NP (DT the) (NNS peaks)) (PP (IN of) (NP (DT some) (NNS mountains)))))))))))))) (. .)))