Assertion: volcano's vent | /r/HasProperty | volcanic
Facets:
Source sentences:
text: The volcano contains 12 volcanic vents and lava flows.
text: Vents that issue volcanic material (including lava and ash) and gases (mainly steam and magmatic gases) can develop anywhere on the landform and may give rise to smaller cones such as Puʻu ʻŌʻō on a flank of Hawaii's Kīlauea.