Assertion: linoleum's surface | /r/HasProperty | installed over other sub-flooring material
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: It’s smooth and hard with a flat surface that is usually installed over a wood underlay or other sub-flooring material, but it’s also slightly softer than other alternatives because it’s made from natural materials like linseed oil, cork, or jute.