Assertion: senate | /r/HasProperty | headed by a vice president
Facets:
value: in this case
type: TEMPORAL
Source sentences:
text: In addition to overseeing the business of the chamber, chairing and regulating debates, deciding whether motions and bills are admissible, representing the Senate, etc., the President of the Senate stands in for the President of the Republic when the latter is unable to perform the duties of the office; in this case the Senate is headed by a vice president.