( Hydrocarbon ( ( based ( surfactants ( are ( ( an ( example group ) ) ( of ( amphiphilic compounds ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Hydrocarbon)) (VP (VBD based) (SBAR (S (NP (NNS surfactants)) (VP (VBP are) (NP (NP (DT an) (NN example) (NN group)) (PP (IN of) (NP (JJ amphiphilic) (NNS compounds)))))))) (. .)))
Hydrocarbon based surfactants are an example group of amphiphilic 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))))))) (. .)))