Assertion: bison | /r/HasProperty | herded to central area
Facets:
value: every year
type: TEMPORAL
value: in late october
type: TEMPORAL
Source sentences:
text: Every year, in late October, all the bison on the island are herded to a central area in a "Great Buffalo Roundup" and sent briefly into pens where they are examined, weighed and vaccinated, whereupon decisions are made on culling and selecting breeding stock.