Assertion: golden eagle's diet | /r/HasProperty | portion
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Source sentences:
text: Verreaux's eagles that are less specialized have diets and hunting capacities that are similar to those of the golden eagle, although the latter species often subsists on hares, rabbits, ground squirrels or grouse for about half or two-thirds of its diet, a portion still comprised by rock hyrax in the Verreaux's.