Assertion: ration's use | /r/HasProperty | key ingredient
Facets:
value: in new england seafood chowders
type: LOCATION
value: from the late 1700s
type: TEMPORAL
Source sentences:
text: Hardtack, crumbled or pounded fine and used as a thickener, was a key ingredient in New England seafood chowders from the late 1700s.