( ( ( Do n't ) ( use ( ( volatile hydrocarbons ) ( -LRB- ( ( gasoline ( , ( camper ( 's fuel ) ) ) ) -RRB- ) ) ) ) ) . )
(ROOT (S (VP (VB Do) (RB n't) (VP (VB use) (NP (NP (JJ volatile) (NNS hydrocarbons)) (PRN (-LRB- -LRB-) (NP (NN gasoline) (, ,) (NN camper) (NNS 's) (NN fuel)) (-RRB- -RRB-))))) (. .)))
Don't use volatile hydrocarbons (gasoline, camper's fuel).
(ROOT (S (NP (NP (JJ Hydrocarbons) (NNS compounds)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VP (VBP serve) (PP (IN as) (NP (NNS fuels)))) (CC and) (VP (VBP are) (VP (VBN used) (PP (IN in) (NP (NN manufacturing)))))))) (, ,)) (VP (VBP are) (VP (VBN called) (NP (NP (DT the) (VBG driving) (NN force)) (PP (IN of) (NP (JJ western) (NN civilization)))))) (. .)))