Three smiling people in various costumes.
Three smiling people wear different costumes
Different is a synonym for various, so both sentences are stating the same thing about three smiling people.
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_smile(e1) & in(x2,x3) & n_costume(x3) & a_various(s1) & Theme(s1,x3) & n_people(x2) & n_thing(x1) & card_eq_3(x1))
exists e2 e1 x1 x2 x3.(n_costume(x3) & Theme(e2,x2) & Actor(e2,x1) & v_wear(e2) & -(x2 = x3) & n_costume(x2) & n_people(x1) & Actor(e1,x1) & v_smile(e1) & card_eq_3(x1))