Assertion: mustard | /r/HasProperty | established as a condiment staple
Facets:
value: firmly
type: MANNER
value: at the 1904 world’s fair
type: TEMPORAL
value: in the united states
type: LOCATION
Source sentences:
text: In the United States, mustard was firmly established as a condiment staple at the 1904 World’s Fair where a new type of treat, the hot dog, was also making its debut.