( ( ( ( spring tide ) ( The ( high tides ) ) ) ( of ( greatest amplitude ) ) ) ( ( caused ( by ( ( the ( Earth ( , ( ( Sun and ) Moon ) ) ) ) ( being ( almost co-linear ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NP (NN spring) (NN tide)) (NP (DT The) (JJ high) (NNS tides))) (PP (IN of) (NP (JJS greatest) (NN amplitude)))) (VP (VBD caused) (PP (IN by) (S (NP (DT the) (NNP Earth) (, ,) (NNP Sun) (CC and) (NNP Moon)) (VP (VBG being) (ADJP (RB almost) (JJ co-linear)))))) (. .)))
spring tide The high tides of greatest amplitude caused by the Earth, Sun and Moon being almost co-linear.
(ROOT (S (NP (NNP Spring) (NNS tides)) (VP (VBP are) (VP (VBN created) (SBAR (WHADVP (WRB when)) (S (NP (NP (DT the) (NN sun)) (CC and) (NP (NP (NN moon) (POS 's)) (NNS tides))) (VP (VBP match)))))) (. .)))