About: http://webisa.webdatacommons.org/137840061

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The sphincter, a ring of muscle, normally stays constricted when a person is not eating; that prevents acid and other digestive juice from leaving the stomach and entering the esophagus.
http://www.w3.org/ns/prov#wasQuotedFrom	medicalxpress.com