Two horses walking threw the grass.
Two horses are walking outside.
Two horses walking threw the grass means they are walking outside as activities of horses walking cannot be indoor.
exists e1 e2 x1 x2 x3.(n_grass(x3) & Theme(e2,x3) & Actor(e2,x1) & v_throw(e2) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_horse(x1) & card_eq_2(x1))
exists e1 s1 x1.(a_outside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_walk(e1) & n_horse(x1) & card_eq_2(x1))