Assertion: bong's chamber | /r/CapableOf | take hour
Facets:
value: with multiple users
type: OTHER
value: often
type: TEMPORAL
Source sentences:
text: Many commercial bongs of this type even make use of pumps to maintain a constant vaccum in the chamber(s) which allows the users to directly inhale the smoke, because "clearing" the chamber of these bongs would often take hours, even with multiple users.