Assertion: crown glass | /r/HasProperty | convex
Facets:
value: slightly
type: DEGREE
Source sentences:
text: The finished “table” of glass was thin, lustrous, highly polished (by “fire-polish”), and had concentric ripple lines, the result of spinning; crown glass was slightly convex, and in the centre of the crown was the bull’s eye, a thickened part where the pontil was attached.