Assertion: hawk's number | /r/CapableOf | vary with variation
Facets:
value: in the number of jackrabbits
type: OTHER
value: closely
type: MANNER
value: in areas
type: LOCATION
Source sentences:
text: In areas where jackrabbit populations are the principal food source, the initial clutch sizes and the number of reared young vary closely with variations in the number of jackrabbits.