( ( When ( ice ( forms ( in ( the Antarctic ) ) ) ) ) ( , ( ( most ( of ( the salt ) ) ) ( ( separates ( from ( ( the water ) ( that ( ( ( freezes and ) remains ) ( in ( ( the water ) ( that ( ( does not ) freeze ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NN ice)) (VP (VBZ forms) (PP (IN in) (NP (DT the) (NNP Antarctic)))))) (, ,) (NP (NP (JJS most)) (PP (IN of) (NP (DT the) (NN salt)))) (VP (VBZ separates) (PP (IN from) (NP (NP (DT the) (NN water)) (SBAR (WHNP (WDT that)) (S (VP (VBZ freezes) (CC and) (VBZ remains) (PP (IN in) (NP (NP (DT the) (NN water)) (SBAR (WHNP (WDT that)) (S (VP (VBZ does) (RB not) (VP (VB freeze))))))))))))) (. .)))
When ice forms in the Antarctic, most of the salt separates from the water that freezes and remains in the water that does not freeze.
(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)))))) (. .)))