Assertion: caucus's party | /r/CapableOf | nominate their candidate
Facets:
value: for president
type: TRANSITIVE-OBJECT
value: officially
type: MANNER
value: at their respective national conventions
type: LOCATION
Source sentences:
text: Both major political parties of the U.S.—the Democratic Party and the Republican Party—officially nominate their candidate for president at their respective national conventions.