Two musicians practicing for a performance.
A herd of cows are eating some hummus.
A herd of cows is not the same as musicians.
exists e1 x1 x2 x3.(a_topic(x1) & for(e1,x3) & n_performance(x3) & Actor(e1,x2) & v_practice(e1) & (x1 = x2) & n_musician(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_eat(e1) & n_hummus(x3) & of(x1,x2) & n_cow(x2) & n_herd(x1))