Assertion: backboard | /r/HasProperty | part of a portable stanchion
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Source sentences:
text: In professional and most higher college settings, the backboard is part of a portable stanchion that can be moved out of the way and stored to allow the venue to host multiple other sports and events, though in most high schools and examples such as Stanford University's Maples Pavilion, backboards are mounted as part of a suspended system using ceiling joists to support the goal and allow them to be put out of the way in the ceiling support system when not in use, along with the more common wall-mounted system.