( ( ( Addition ( of ( X 2 ) ) ) ( to ( alkenes ( in ( ( water or ) alcohols ) ) ) ) ) . )
(ROOT (NP (NP (NNP Addition)) (PP (IN of) (NP (NNP X) (CD 2))) (PP (TO to) (NP (NP (NNS alkenes)) (PP (IN in) (NP (NN water) (CC or) (NNS alcohols))))) (. .)))
Addition of X 2 to alkenes in water or alcohols.
(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))))))))) (. .)))