girl wearing swim gear is surfboarding
Two men are on a sailboat.
One girl who is surfboarding is not the same as two men who are on a sailboat because they are different in number, gender and activities.
exists e2 e1 x1 x2 x3.(Actor(e2,x1) & v_surfboard(e2) & n_gear(x1) & of(x1,x3) & n_swim(x3) & Actor(e1,x1) & v_wear(e1) & of(x1,x2) & n_girl(x2))
exists p1 x1.(exists x2.(on(x1,x2) & n_sailboat(x2)) & n_man(x1) & card_eq_2(x1))