Assertion: elf's use | /r/HasProperty | established in english
Facets:
value: well
type: DEGREE
Source sentences:
text: By then, use of elves as the preferred plural for the creature was well established in English, following the example set by many other nouns that end in an –f that converts to a v when the noun in pluralized: shelf becomes shelves; scarf (usually) becomes scarves; wolf and calf becomes wolves and calves.