( ( ( The surface ) ( of ( the Island ) ) ) ( ( ( ( is mostly ) water ) ( if ( it ( can ( be ( called water ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN surface)) (PP (IN of) (NP (DT the) (NNP Island)))) (VP (VBZ is) (ADVP (RB mostly)) (NP (NN water)) (SBAR (IN if) (S (NP (PRP it)) (VP (MD can) (VP (VB be) (VP (VBN called) (NP (NN water)))))))) (. .)))
The surface of the Island is mostly water if it can be called water.
(ROOT (S (NP (NP (NNS Seamounts)) (SBAR (WHNP (WDT that)) (S (VP (VBP rise) (PP (IN above) (NP (DT the) (NN water) (NN surface))))))) (VP (VBP are) (VP (VBN called) (NP (NNS islands)))) (. .)))