Assertion: porcupine's area | /r/LocatedNear | migrates
Facets:
value: to calve
type: TEMPORAL
value: through these areas
type: LOCATION
Source sentences:
text: Each year, thousands of waterfowl and other birds nest and reproduce in areas surrounding Prudhoe Bay and Kuparuk fields and a healthy and increasing caribou herd migrates through these areas to calve and seek respite from annoying pests.