One man and one woman walking behind two cows pulling a plow.
People riding horses.
Cows aren't horses.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(a_topic(s1) & subset_of(x2,s1) & behind(e1,x4) & Theme(e2,x6) & Actor(e2,x5) & v_pull(e2) & n_plow(x6) & (x4 = x5) & n_cow(x4) & card_eq_2(x4) & Actor(e1,x3) & v_walk(e1) & (x2 = x3) & n_woman(x2) & card_eq_1(x2) & subset_of(x1,s1) & n_man(x1) & card_eq_1(x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_horse(x3) & (x1 = x2) & n_people(x1))