Assertion: prairie dog's colony | /r/MadeOf | 81 ±
Facets:
value: in late spring of each year
type: TEMPORAL
Source sentences:
text: Our study colony covers 6.6 hectares (16 acres) and has not expanded during the period of research; in late spring of each year the colony contains a mean ± SD of 133 ± 29 adults and yearlings and 81 ± 33 juveniles.