A few dogs swimming in a lake.
Cats swim in a lake.
Dogs are different animals from cats!
exists e1 s1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_lake(x3) & Actor(e1,x2) & v_swim(e1) & (x1 = x2) & n_dog(x1) & a_few(s1) & Theme(s1,x1))
exists e1 x1 x2.(in(e1,x2) & n_lake(x2) & Actor(e1,x1) & v_swim(e1) & n_cat(x1))