Wikipedia entity: Long-legged buzzard
Topics: animal diet; percentage; prey items
Original sentence: Of 50 prey items, here great gerbils (Rhombomys opimus) led the diet at 48%, followed by Tartar sand boa (Eryx miliaris) (18%), cape hare (Lepus capensis) (6%), goitered gazelle (Gazella subgutturosa) (6%) (likely but not certainly taken to the nest as carrion) and Mongolian finch (Bucanetes mongolicus) (6%).
Quantified sentence: Of 50 prey items, here great gerbils (Rhombomys opimus) led the diet at 48%, followed by Tartar sand boa (Eryx miliaris) (18%),  cape hare (Lepus capensis) (6%), goitered gazelle (Gazella subgutturosa) (6%) (likely but not certainly taken to the nest as carrion) and some Mongolian finch (Bucanetes mongolicus).
Quantifier: some
Percentage: 6%
Specificity: partially