( Freshwater ( ( freezes ( at ( ( a ( higher temperature ) ) ( than seawater ) ) ) ) . ) )
(ROOT (S (NP (NNP Freshwater)) (VP (VBZ freezes) (PP (IN at) (NP (NP (DT a) (JJR higher) (NN temperature)) (PP (IN than) (NP (NN seawater)))))) (. .)))
Freshwater freezes at a higher temperature than seawater.
(ROOT (S (NP (NP (JJS Most)) (PP (IN of) (NP (NP (DT the) (NN earth) (POS 's)) (NN freshwater)))) (VP (VBZ is) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (ADJP (JJ frozen)))))) (. .)))