Assertion: prairie dog's colony | /r/HasProperty | compared
Facets:
value: during 1979
type: TEMPORAL
value: during 1980
type: TEMPORAL
Source sentences:
text: Two colonies of black-tailed prairie dogs (Cynomys ludovicianus) in Wind Cave National Park, South Dakota, were compared during 1979 and 1980 to investigate the effects of (1) the age of the population and (2) the availability of resources on specific demographic parameters.