Assertion: sofa's frame | /r/CapableOf | support side
Facets:
value: to prevent the sagging futons
type: PURPOSE
Source sentences:
text: The design includes a frame to support the back, bottom, and sides to prevent the sagging futons are so well known for.
text: The design includes a frame to support the back, bottom, and sides to prevent the sagging futons are so well known for.