Assertion: dry snorkel | /r/HasAspect | valve
Facets:
value: at the top of the snorkel
type: LOCATION
Source sentences:
text: The dry snorkel has a valve at the top of the snorkel—which completely blocks water and air even when the snorkel is submerged—and a purge valve at the bottom.
text: The dry snorkel has a valve at the top of the snorkel—which completely blocks water and air even when the snorkel is submerged—and a purge valve at the bottom.