Assertion: peanut butter | /r/HasProperty | american
Facets:
value: almost uniquely
type: DEGREE
value: until about the 1960s
type: TEMPORAL
Source sentences:
text: Peanut butter was almost uniquely American until about the 1960s.
text: According to the book “Creamy and Crunchy: An Informal History of Peanut Butter, the All-American Food,” a concessionaire named C.H. Sumner was the only vendor to sell peanut butter.