Two mountain climbers are smiling on the mountainside.
Two mountain climbers are outdoors.
In order to be on the mountainside one has to be outdoors.
exists e1 x1 x2 x3.(n_mountainside(x3) & on(e1,x3) & Actor(e1,x1) & v_smile(e1) & n_climber(x1) & of(x1,x2) & n_mountain(x2) & card_eq_2(x1))
exists p1 x1 x2.(exists x3.((x1 = x3) & n_outdoors(x3)) & n_climber(x1) & of(x1,x2) & n_mountain(x2) & card_eq_2(x1))