( ( The alkenes ) ( ( ( ( ( are ( insoluble ( in water ) ) ) , ) but ) ( are ( soluble ( in ( organic solvents ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS alkenes)) (VP (VP (VBP are) (ADJP (JJ insoluble) (PP (IN in) (NP (NN water))))) (, ,) (CC but) (VP (VBP are) (ADJP (JJ soluble) (PP (IN in) (NP (JJ organic) (NNS solvents)))))) (. .)))
The alkenes are insoluble in water, but are soluble in organic solvents.
(ROOT (S (NP (NNS Alkenes)) (VP (VBP are) (VP (VBN formed) (PP (IN from) (NP (NP (DT an) (NN alcohol)) (SBAR (WHNP (WDT that)) (S (VP (VBZ loses) (NP (NN water))))))))) (. .)))