Assertion: milk crate | /r/HasProperty | produced through a period of trial and error
Facets:
value: in the 1950s
type: TEMPORAL
value: in 60s
type: TEMPORAL
Source sentences:
text: The plastic milk crate is claimed as an Australian invention, produced through a period of trial and error in design by the Dairy Farmers Cooperative Milk Company in the 1950s and 60s.