Assertion: american basketball league | /r/HasProperty | abl
Facets:
Source sentences:
text: Although there had been earlier attempts at professional basketball leagues, including the American Basketball League (ABL) and the NBL, the BAA was the first league that attempted to play primarily in large arenas in major cities, such as Madison Square Garden and Boston Garden.
text: Basketball was seen as particularly vulnerable to a challenge; its major league, the National Basketball Association, was the youngest of the Big Four major leagues, having only played 21 seasons to that point, and was still fending off contemporary challenging leagues (it had been less than five years since the American Basketball League (ABL) shut down).