Assertion: drought | /r/HasProperty | evident
Facets:
value: at a time
type: TEMPORAL
value: for decades
type: TEMPORAL
Source sentences:
text: Paleo studies over the southwestern Canadian Prairies using tree ring chronologies dating back to 1597 indicate that the 20th century lacked the prolonged droughts of the 18th and 19th Centuries when droughts were evident for decades at a time.