Assertion: figure skate's blade | /r/HasProperty | sharpened
Facets:
value: with a special machine
type: CAUSE
value: with round-edged grinding wheels
type: OTHER
Source sentences:
text: The blades are sharpened with round-edged grinding wheels that create the two edges.
text: The blades are sharpened with a special machine that gives them edges, an inside and an outside.