( ( The ( LIF methods ) ) ( ( ( provide ( ( qualitative data ) ( on ( ( the ( ( in situ ) distribution ) ) ( of ( petroleum hydrocarbons ) ) ) ) ) ) ( from ( ( the ( fluorescence response ) ) ( induced ( in ( ( the PAHs ) ( that ( are ( ( one group ) ( of ( compounds ( present ( in ( petroleum ( hydrocarbon products ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP LIF) (NNS methods)) (VP (VBP provide) (NP (NP (JJ qualitative) (NNS data)) (PP (IN on) (NP (NP (DT the) (ADJP (IN in) (JJ situ)) (NN distribution)) (PP (IN of) (NP (NN petroleum) (NNS hydrocarbons)))))) (PP (IN from) (NP (NP (DT the) (JJ fluorescence) (NN response)) (VP (VBN induced) (PP (IN in) (NP (NP (DT the) (NNPS PAHs)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (NP (NP (CD one) (NN group)) (PP (IN of) (NP (NP (NNS compounds)) (ADJP (JJ present) (PP (IN in) (NP (NN petroleum) (NN hydrocarbon) (NNS products)))))))))))))))) (. .)))
The LIF methods provide qualitative data on the in situ distribution of petroleum hydrocarbons from the fluorescence response induced in the PAHs that are one group of compounds present in petroleum hydrocarbon products.
(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))))))) (. .)))