Assertion: apostrophe's use | /r/CapableOf | become popular
Facets:
value: by the 19th century
type: TEMPORAL
Source sentences:
text: The standard literary spelling of /uː/ was ⟨ou⟩, generally preferred in the Scottish National Dictionary, although the use of ⟨oo⟩, borrowed from Standard English, became popular by the 19th century.