A person is eating pasta, while a dog is watching.
A person is eating pizza, while a cat is watching.
A person cannot eat pasta and pizza at the same time. A dog is a different animal than a cat.
exists e1 p1 x1 x2.(exists e2 x3.(Actor(e2,x3) & v_watch(e2) & n_dog(x3)) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_pasta(x2) & n_person(x1))
exists p1 p2 x1.(exists e1 x3.(Actor(e1,x3) & v_watch(e1) & n_cat(x3)) & while(p1,p2) & exists s1 x2.((x1 = x2) & n_pizza(x2) & a_eating(s1) & Theme(s1,x2)) & n_person(x1))