Assertion: epee's blade | /r/Synonym | quillback
Facets:
value: often
type: TEMPORAL
value: due to the round spine
type: CAUSE
value: these
type: OTHER
Source sentences:
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.