Assertion: glass's edge | /r/HasProperty | exposed to sharp hot and o 2 -richflame
Facets:
value: directly
type: MANNER
value: very
type: DEGREE
Source sentences:
text: Flame cutting' a piece of glass will often produce a quartzlet if the freshly 'torn' edge is exposed directly to a sharp (very hot and O 2 -rich) flame.