Assertion: fire engine's siren | /r/HasProperty | developed by george slight
Facets:
value: during 1877–1880
type: TEMPORAL
Source sentences:
text: The earliest such sirens were developed during 1877–1880 by James Douglass and George Slight (1859–1934) of Trinity House; the final version was first installed in 1887 at the Ailsa Craig lighthouse in Scotland's Firth of Clyde.