( This ( ( created ( ( ( the source ) ( of ( ( heat and ) water ) ) ) ( that ( ( feed ( the ( West ( Thumb ( Geyser Basin ) ) ) ) ) today ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (VBD created) (NP (NP (DT the) (NN source)) (PP (IN of) (NP (NN heat) (CC and) (NN water))) (SBAR (WHNP (WDT that)) (S (VP (VBP feed) (NP (DT the) (NNP West) (NNP Thumb) (NNP Geyser) (NNP Basin)) (NP (NN today))))))) (. .)))
This created the source of heat and water that feed the West Thumb Geyser Basin today.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NN water)) (VP (VP (VBZ is) (VP (VP (VBN heated) (PP (IN by) (NP (NN magma)))) (CC and) (VP (VBZ makes) (NP (PRP$ its) (NN way)) (PP (TO to) (NP (DT the) (NN surface)))))) (CC and) (VP (VBZ creates))))) (NP (DT a) (-LRB- -LRB-) (NN n) (-RRB- -RRB-)) (VP (VBP geyser)) (. .)))