Assertion: wheelchair's seat | /r/HasProperty | designed
Facets:
Source sentences:
text: The seat must be designed so that it does not interfere with proper placement of belt restraints on the occupant and so that it does not cause failures of belt restraint components during dynamic loading.
text: The seating system must support the occupant throughout the crash event so that properly positioned belt restraints remain on the bony regions of the body, and the seat should be designed so that it is not the source of occupant injuries.