( Carotenoids ( ( are ( ( ( highly unsaturated ) ( polyisoprene hydrocarbons ) ) ( that ( are ( lipid soluble ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Carotenoids)) (VP (VBP are) (NP (NP (ADJP (RB highly) (JJ unsaturated)) (NN polyisoprene) (NNS hydrocarbons)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (ADJP (RB lipid) (JJ soluble))))))) (. .)))
Carotenoids are highly unsaturated polyisoprene hydrocarbons that are lipid soluble.
(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))))))) (. .)))