Assertion: joker's weapon | /r/HasProperty | the batarang
Facets:
Source sentences:
text: Batman historian Les Daniels credits Gardner Fox with creating the concept of Batman's arsenal with the introduction of the utility belt in Detective Comics #29 (July 1939) and the first bat-themed weapons the batarang and the "Batgyro" in Detective Comics #31 and #32 (Sept., Oct. 1939).