( ( ( Surface conditions ) ( such ( as ( ( droughts or ) ( ( extremely wet ) periods ) ) ) ) ) ( ( ( may not ) ( ( effect ( ( ( geyser eruptions ) or ) ( hot ( spring flow ) ) ) ) ( for ( hundreds ( of years ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Surface) (NNS conditions)) (PP (JJ such) (IN as) (NP (NP (NNS droughts)) (CC or) (NP (ADJP (RB extremely) (JJ wet)) (NNS periods))))) (VP (MD may) (RB not) (VP (VB effect) (NP (NP (NN geyser) (NNS eruptions)) (CC or) (NP (JJ hot) (NN spring) (NN flow))) (PP (IN for) (NP (NP (NNS hundreds)) (PP (IN of) (NP (NNS years))))))) (. .)))
Surface conditions such as droughts or extremely wet periods may not effect geyser eruptions or hot spring flow for hundreds of years.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NN magma)) (VP (VBZ heats) (NP (NN groundwater))))) (, ,) (NP (PRP it)) (VP (MD may) (VP (VB come) (PP (TO to) (NP (NP (DT the) (NN surface)) (PP (IN as) (NP (NP (DT a) (JJ hot) (NN spring)) (CC or) (NP (DT a) (NN geyser)))))))) (. .)))