A child petting a dog.
a person rubs an animal.
A child is a person. A dog is an animal.
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_pet(e1) & n_dog(x3) & (x1 = x2) & n_child(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_rub(e1) & n_animal(x2) & n_person(x1))