A young boy eating ice cream.
Boy eating steak
The boy cannot be eating both ice cream and steak.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_eat(e1) & n_cream(x3) & of(x3,x4) & n_ice(x4) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists x1 x2 x3.(n_steak(x1) & of(x1,x3) & n_eating(x3) & (x1 = x2) & ne_nam_boy(x2) & a_topic(x1))