Camel(a) <=> ∃h1,h2,a Hump(h1) ∧ Hump(h2) ∧ Animal(a) ∧ PartOf(h1, a) ∧ PartOf(h2, a) ∧ (∀h3 Hump(h3) ∧ PartOf(h3, a) => (h3 = h1 ∨ h3 = h2))(Edited: 2017-11-15)
Camel(c) ⇔ ∃h_1, h_2 Hump(h1) ∧ Hump(h2) ∧ PartOf(h_1, c) ∧ PartOf(h_2, c) ∧ (∀h_3 Hump(h_3) ∧ PartOf(h_3, c)) ∧ Animal(c) ⇒ h_1 = h_3 ∨ h_2 = h_3(Edited: 2017-11-16)