Two kids wearing blue are ridding horses.
The children are learning dressage
Just because kids are ridding horses does not mean they are learning dressage.
exists e1 e2 x1 x2 x3 x4.(Theme(e2,x4) & Actor(e2,x1) & v_rid(e2) & n_horse(x4) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_blue(x3) & (x1 = x2) & n_kid(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_child(x1) & Theme(e1,x2) & Actor(e1,x1) & v_learn(e1) & n_dressage(x2))