Assertion: crumb rubber | /r/HasProperty | preferable substitutes
Facets:
value: for use as infill material
type: PURPOSE
value: for crumb rubber
type: OTHER
Source sentences:
text: Any alternative infill materials would need to be subjected to the same rigorous physical and chemical testing that crumb rubber has undergone to determine if they are preferable substitutes for crumb rubber for use as infill material.