The horse on the left is brown.
One horse is on the left.
There may be more than one horse on the left.
exists s1 x1 x2.(n_left(x2) & n_horse(x1) & Theme(s1,x1) & a_brown(s1) & on(x1,x2))
exists p1 x1 x2.(n_left(x2) & on(x1,x2) & n_horse(x1) & card_eq_1(x1))