( ( In 2011 ) ( , ( Crownover ( ( coauthored ( ( ( House ( Bill 3328 ) ) , ) ( which ( required ( ( natural ( gas ( drilling operators ) ) ) ( ( engaged ( in ( hydraulic fracturing ) ) ) ( to ( disclose ( ( the chemicals ) ( used ( in ( the ( fracking process ) ) ) ) ) ) ) ) ) ) ) ) ) ; ) ) ) )
(ROOT (S (PP (IN In) (NP (CD 2011))) (, ,) (NP (NNP Crownover)) (VP (VBD coauthored) (NP (NP (NNP House) (NNP Bill) (NNP 3328)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBD required) (SBAR (S (NP (JJ natural) (NN gas) (NN drilling) (NNS operators)) (VP (VBD engaged) (PP (IN in) (NP (JJ hydraulic) (NN fracturing))) (S (VP (TO to) (VP (VB disclose) (NP (NP (DT the) (NNS chemicals)) (VP (VBN used) (PP (IN in) (NP (DT the) (VBG fracking) (NN process)))))))))))))))) (: ;)))
In 2011, Crownover coauthored House Bill 3328, which required natural gas drilling operators engaged in hydraulic fracturing to disclose the chemicals used in the fracking process;
(ROOT (S (PP (IN In) (NP (DT the) (JJ fracking) (NN industry))) (, ,) (NP (NNS fluids)) (VP (VBP are) (VP (VBN pumped) (PP (IN through) (NP (DT a) (NN borehole))) (, ,) (S (VP (VBG creating) (NP (NNS fractures)) (PP (IN in) (NP (NP (DT the) (NN rock)) (SBAR (WHNP (WDT that)) (S (VP (VBZ contains) (NP (DT the) (JJ natural) (NN gas))))))))))) (. .)))