( She ( ( 's ( been ( studying ( ( ( deepsea vents ) , ) ( cracks ( in ( ( ( the ( earth 's ) ) crust ) ( located ( on ( ( the ( ocean floor ) ) ( which ( release ( ( extremely hot ) water ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP She)) (VP (VBZ 's) (VP (VBN been) (VP (VBG studying) (NP (NP (NN deepsea) (NNS vents)) (, ,) (NP (NP (NNS cracks)) (PP (IN in) (NP (NP (NP (DT the) (NN earth) (POS 's)) (NN crust)) (VP (VBN located) (PP (IN on) (NP (NP (DT the) (NN ocean) (NN floor)) (SBAR (WHNP (WDT which)) (S (VP (VBP release) (NP (ADJP (RB extremely) (JJ hot)) (NN water))))))))))))))) (. .)))
She's been studying deepsea vents, cracks in the earth's crust located on the ocean floor which release extremely hot water.
(ROOT (S (NP (NP (JJS Most)) (PP (IN of) (NP (NP (NN earth) (POS 's)) (NN water)))) (VP (VBZ is) (VP (VBN located) (PP (IN in) (NP (NNS oceans)))))))