Assertion: seeker's country | /r/CapableOf | test nuclear devices
Facets:
value: in 1960s
type: TEMPORAL
value: in the 1950s
type: TEMPORAL
Source sentences:
text: Like, really great distances: When the U.S. and other countries were testing nuclear devices willy-nilly in the 1950s and 1960s, the entire planet got covered with radioactive fallout.