In short, most of the whale is incompressible.
( ( In short ) ( , ( ( most ( of ( the whale ) ) ) ( ( is incompressible ) . ) ) ) )
(ROOT (S (PP (IN In) (ADJP (JJ short))) (, ,) (NP (NP (JJS most)) (PP (IN of) (NP (DT the) (NN whale)))) (VP (VBZ is) (ADJP (JJ incompressible))) (. .)))
Some parts of a whale could be compressed.
( ( ( Some parts ) ( of ( a whale ) ) ) ( ( could ( be compressed ) ) . ) )
(ROOT (S (NP (NP (DT Some) (NNS parts)) (PP (IN of) (NP (DT a) (NN whale)))) (VP (MD could) (VP (VB be) (VP (VBN compressed)))) (. .)))