Assertion: known hamburger | /r/HasProperty | served on grandpa oscar’s farm
Facets:
value: in 1891
type: TEMPORAL
value: just west of tulsa
type: LOCATION
Source sentences:
text: The family of Oscar Weber Bilby claim the first-known hamburger on a bun was served on July 4, 1891 on Grandpa Oscar’s farm.
text: The family of Oscar Weber Bilby claim the first-known hamburger on a bun was served on July 4, 1891 on Grandpa Oscar's farm.
text: The family of Oscar Weber Bilby claim the first-known hamburger on a bun was served on Grandpa Oscar’s farm just west of Tulsa, Oklahoma in 1891.