( ( ( ( ( ( ( i.e. , ) hydrocarbons ) , ) ( ( organic compounds ) ( containing ( functional groups ) ) ) ) , ) ( activity ( in ( organic compounds ) ) ) ) . )
(ROOT (NP (NP (NNP i.e.)) (, ,) (NP (NNS hydrocarbons)) (, ,) (S (NP (JJ organic) (NNS compounds)) (VP (VBG containing) (NP (JJ functional) (NNS groups)))) (, ,) (NP (NP (NN activity)) (PP (IN in) (NP (JJ organic) (NNS compounds)))) (. .)))
i.e., hydrocarbons, organic compounds containing functional groups, activity in organic compounds.
(ROOT (S (NP (DT A) (NN lipid)) (VP (VBZ is) (NP (NP (CD one)) (PP (IN of) (NP (NP (DT a) (ADJP (RB highly) (JJ diverse)) (NN group)) (PP (IN of) (NP (NP (NNS compounds)) (VP (VBN made) (PRT (RP up)) (ADVP (RB mostly))))) (PP (IN of) (NP (NNS hydrocarbons))))))) (. .)))