( ( By ( ( stuffing geysers ) ( with ( various items ) ) ) ) ( , ( one ( ( ( clogs ( ( ( ( ( the ( heat ( or ( water supply ) ) ) ) , ) or ) both ) , ) ) ( causing ( the ( geyser ( to ( ( no longer ) erupt ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN By) (S (VP (VBG stuffing) (NP (NNS geysers)) (PP (IN with) (NP (JJ various) (NNS items)))))) (, ,) (NP (PRP one)) (VP (VBZ clogs) (NP (NP (DT the) (NN heat) (CC or) (NN water) (NN supply)) (, ,) (CC or) (NP (DT both)) (, ,)) (S (VP (VBG causing) (NP (DT the) (NN geyser) (S (VP (TO to) (VP (ADVP (RB no) (RB longer)) (VB erupt)))))))) (. .)))
By stuffing geysers with various items, one clogs the heat or water supply, or both, causing the geyser to no longer erupt.
(ROOT (S (NP (NNS Geysers)) (VP (VBP are) (VP (VBN created) (SBAR (WHADVP (WRB when)) (S (NP (NN water)) (VP (VBZ is) (VP (VBN heated) (PP (IN beneath) (NP (NP (DT the) (NN earth) (POS 's)) (NN surface))))))))) (. .)))