Assertion: esophagus's sphincter | /r/CapableOf | remain closed
Facets:
value: most of the time
type: TEMPORAL
Source sentences:
text: The upper esophageal sphincter is composed of circular muscle tissue and remains closed most of the time.
text: Stomach acids that are secreted to promote digestion also cannot flow back and enter esophagus as the sphincter remains closed.
text: The sphincter remains closed most of the time, and opens only when consuming food.