Assertion: severe dust storm | /r/CapableOf | damage agriculture
Facets:
value: during the 1930s
type: TEMPORAL
value: greatly
type: DEGREE
Source sentences:
text: The Dust Bowl was a period of severe dust storms that greatly damaged the ecology and agriculture of the American and Canadian prairies during the 1930s; severe drought and a failure to apply dryland farming methods to prevent the aeolian processes (wind erosion) caused the phenomenon.