Assertion: volcano's vent | /r/CapableOf | emit heated water
Facets:
value: with high levels of sulfides
type: OTHER
value: geothermally
type: MANNER
Source sentences:
text: Named ‘black smokers’, the vents emit geothermally heated water up to 400°C, with high levels of sulfides that precipitate on contact with the cold ocean to form the black smoke.