A dog is nipping at the ear of another dog on a leash, in a park.
A dog is being bitten
nipping and being bitten mean the same.
exists e1 x1 x2 x3 x4 x5.(n_ear(x2) & in(e1,x5) & n_park(x5) & at(e1,x2) & of(x2,x3) & on(x3,x4) & n_leash(x4) & n_dog(x3) & -(x3 = x1) & n_dog(x1) & n_dog(x1) & Actor(e1,x1) & v_nip(e1))
exists e1 x1.(Theme(e1,x1) & v_bite(e1) & n_dog(x1))