Assertion: gracie challenge | /r/HasProperty | open invitation
Facets:
value: to martial artists of other styles
type: TRANSITIVE-OBJECT
Source sentences:
text: The Gracie challenge was an open invitation issued by some members of the Gracie family, known for their Brazilian Jiu-Jitsu (BJJ) mastery, to martial artists of other styles to fight them in a vale tudo match.