( ( and ( -LRB- ( ( 5 -RRB- ) ( ( land disposal ) ( which ( produces ( ( ( no ( measurable ( methane gas ) ) ) or ) ( which ( ( ( involves ( ( the retrieval ) ( of ( methane gas ) ) ) ) ( as ( ( a fuel ) ( for ( ( the production ) ( of energy ) ) ) ) ) ) ( to ( be ( used ( ( on-site or ) ( for sale ) ) ) ) ) ) ) ) ) ) ) ) ) ) ; )
(ROOT (S (VP (VB and) (S (-LRB- -LRB-) (NP (CD 5)) (-RRB- -RRB-) (NP (NP (NN land) (NN disposal)) (SBAR (WHNP (WDT which)) (S (VP (VBZ produces) (NP (NP (DT no) (JJ measurable) (NN methane) (NN gas)) (CC or) (SBAR (WHNP (WDT which)) (S (VP (VBZ involves) (NP (NP (DT the) (NN retrieval)) (PP (IN of) (NP (NN methane) (NN gas)))) (PP (IN as) (NP (NP (DT a) (NN fuel)) (PP (IN for) (NP (NP (DT the) (NN production)) (PP (IN of) (NP (NN energy))))))) (S (VP (TO to) (VP (VB be) (VP (VBN used) (UCP (ADVP (JJ on-site)) (CC or) (PP (IN for) (NP (NN sale)))))))))))))))))) (: ;)))
and (5) land disposal which produces no measurable methane gas or which involves the retrieval of methane gas as a fuel for the production of energy to be used on-site or for sale;
(ROOT (S (NP (NNS Archaeans)) (VP (VBP produce) (NP (NN methane) (NN gas)) (PP (IN as) (NP (DT a) (NN waste) (NN product)))) (. .)))