Assertion: gas | /r/HasProperty | elicited on other occasions
Facets:
value: by tensing the rectum
type: MANNER
value: voluntarily
type: MANNER
Source sentences:
text: Among humans, flatulence occasionally happens accidentally, such as incidentally to coughing or sneezing or during orgasm; on other occasions, flatulence can be voluntarily elicited by tensing the rectum or "bearing down" on stomach or bowel muscles and subsequently relaxing the anal sphincter, resulting in the expulsion of flatus.