( Tides ( ( ( ( are ( periodic rises ) ) and ) ( falls ( of ( ( large bodies ) ( of water ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Tides)) (VP (VP (VBP are) (NP (JJ periodic) (NNS rises))) (CC and) (VP (VBZ falls) (PP (IN of) (NP (NP (JJ large) (NNS bodies)) (PP (IN of) (NP (NN water))))))) (. .)))
Tides are periodic rises and falls of large bodies of water.
(ROOT (S (NP (NNS Tides)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (SBAR (WHADVP (WRB when)) (S (NP (NP (DT the) (NN water)) (PP (IN of) (NP (DT the) (NN ocean)))) (ADVP (RB slowly)) (VP (VP (VBZ rises)) (CC and) (VP (VBZ falls)))))))) (. .)))