Assertion: prairie dog's colony | /r/HasProperty | studied in the field
Facets:
value: for 16 years
type: TEMPORAL
Source sentences:
text: A colony of the highly social black-tailed prairie dog (Cynomys ludovicianus) was studied in the field for 16 years, and data were gathered for estimation of effective population sizes from pedigrees, demography, and allozyme alleles.