Assertion: epee's blade | /r/HasProperty | the knife
Facets:
value: often
type: TEMPORAL
value: due to the round spine
type: CAUSE
value: these
type: OTHER
Source sentences:
text: Therein is the blade of the knife, the knife which falls and severs.
text: These long, slender blades are often called “quillback” or "pipeback" blades, due to the round spine that runs through the blade like the quill of a feather.