( Tides ( ( are ( ( ( the ( periodic ( ( -LRB- ( ( occurring ( at ( regular intervals ) ) ) -RRB- ) ) rise ) ) ) and ) ( fall ( of ( ( the ( surface ( water level ) ) ) ( of ( ( ( ( ( ( ( ( the oceans ) , ) bays ) , ) gulfs ) , ) and ) inlets ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Tides)) (VP (VBP are) (NP (NP (DT the) (JJ periodic) (PRN (-LRB- -LRB-) (VP (VBG occurring) (PP (IN at) (NP (JJ regular) (NNS intervals)))) (-RRB- -RRB-)) (NN rise)) (CC and) (NP (NP (NN fall)) (PP (IN of) (NP (NP (DT the) (NN surface) (NN water) (NN level)) (PP (IN of) (NP (NP (DT the) (NNS oceans)) (, ,) (NP (NNS bays)) (, ,) (NP (NNS gulfs)) (, ,) (CC and) (NP (NNS inlets))))))))) (. .)))
Tides are the periodic (occurring at regular intervals) rise and fall of the surface water level of the oceans, bays, gulfs, and inlets.
(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)))))))) (. .)))