Assertion: trampoline's spring | /r/ObjectUse | used in many trampolines
Facets:
Source sentences:
text: Bungee cords: Instead of the springs used in many trampolines, this model uses 36 black bungee cords to achieve bounce.
text: The type of springs used by a trampoline plays an essential role in their functionality.
text: Instead of the springs used in many trampolines, this model uses 36 black bungee cords to achieve bounce.