Assertion: blanket | /r/HasProperty | joined to the mattress
Facets:
value: by the zipper
type: MANNER
value: through the elastic band
type: MANNER
Source sentences:
text: The blanket 28 is joined to the mattress, through the elastic band 17, by the zipper 22, and as in the case of the zipper 20 by which the sheet is joined to the mattress, the zipper 22 may be of the type that is releasable from both ends or may be constituted by two separate zippers, one along each side of the mattress.