( ( A ( powerful ( volcanic uplifting ) ) ) ( ( ( caused ( ( Paoha ( Island 's ) ) ( white ( , ( chalky surface ) ) ) ) ) ( to ( rise ( above ( the water ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (JJ powerful) (JJ volcanic) (NN uplifting)) (VP (VBD caused) (NP (NP (NNP Paoha) (NNP Island) (POS 's)) (JJ white) (, ,) (JJ chalky) (NN surface)) (S (VP (TO to) (VP (VB rise) (PP (IN above) (NP (DT the) (NN water))))))) (. .)))
A powerful volcanic uplifting caused Paoha Island's white, chalky surface to rise above the 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)))) (. .)))