Assertion: corn | /r/CapableOf | average 91.4 bushels per acre
Facets:
value: in 1973
type: TEMPORAL
Source sentences:
text: In 1922-1931, production averaged 30.4 bushels per acre; in 1947-1956, it average 46.6 bushels per acre; in 1973, it averaged 91.4 bushels per acre; and in 1994, the average was 142 bushels per acre.