( ( In 2012 ) ( , ( ( the group ) ( ( ( ( began campaigning ) ( against ( ( the practice ) ( of ( ( hydraulic fracturing ) ( -LRB- ( fracking -RRB- ) ) ) ) ) ) ) ( by ( Chesapeake ( Energy ( and ( other ( oil ( and ( gas ( drilling companies ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (CD 2012))) (, ,) (NP (DT the) (NN group)) (VP (VBD began) (NP (NN campaigning)) (PP (IN against) (NP (NP (DT the) (NN practice)) (PP (IN of) (NP (NP (JJ hydraulic) (NN fracturing)) (PRN (-LRB- -LRB-) (NP (NN fracking)) (-RRB- -RRB-)))))) (PP (IN by) (NP (NNP Chesapeake) (NNP Energy) (CC and) (JJ other) (NN oil) (CC and) (NN gas) (NN drilling) (NNS companies)))) (. .)))
In 2012, the group began campaigning against the practice of hydraulic fracturing (fracking) by Chesapeake Energy and other oil and gas drilling companies.
(ROOT (S (NP (NNP Fracking)) (VP (VBZ is) (NP (NP (DT another) (NN term)) (PP (IN for) (NP (JJ hydraulic) (NN fracturing))))) (. .)))