Assertion: gypsum's water | /r/HasProperty | pumped into native sulfur deposit
Facets:
value: in this method
type: MANNER
value: to melt the sulfur
type: PURPOSE
Source sentences:
text: In this method, superheated water was pumped into a native sulfur deposit to melt the sulfur, and then compressed air returned the 99.5% pure melted product to the surface.