A closeup of a hummingbird.
A robin eating a worm.
Hummingbird is a different type of bird than a robin.
exists x1 x2.(a_topic(x1) & of(x1,x2) & n_hummingbird(x2) & n_closeup(x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_eat(e1) & n_worm(x3) & (x1 = x2) & n_robin(x1))