Assertion: magpie | /r/CapableOf | follow american bison herds
Facets:
value: formerly
type: TEMPORAL
Source sentences:
text: Magpies formerly followed American bison herds (from which they gleaned ticks and insects), as well as the bands of Plains Indians that hunted the bison so they could scavenge carcasses.
text: Magpies formerly followed American bison herds (from which they gleaned ticks and insects), as well as the bands of Plains Indians that hunted the bison so they could scavenge carcasses.