Assertion: esophagus's muscle | /r/HasProperty | sphincter
Facets:
value: at bottom
type: LOCATION
Source sentences:
text: Rings of muscle (sphincters) in the upper and lower portions contract and relax to allow food and liquid to pass.
text: The esophagus is lined with rings of muscles called sphincters at the top and bottom of its length.
text: Rings of muscle (sphincters) in the upper and lower portions contract and relax to allow food and liquid to pass.
text: Rings of muscle (sphincters) in the upper and lower portions contract and relax to allow food and liquid to pass.