Two men in black outfits have backpacks.
A couple of guys dressed in black are carrying backpacks.
Having a backpack doesn't mean one is carrying it.
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_have(e1) & n_backpack(x3) & in(x1,x2) & n_outfit(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1) & card_eq_2(x1))
exists e1 e2 s1 x1 x2 x3 x4 x5.(Theme(e2,x5) & Actor(e2,x1) & v_carry(e2) & n_backpack(x5) & of(x1,x2) & Theme(e1,s1) & Theme(s1,x4) & a_black(s1) & Theme(e1,x3) & v_dress(e1) & (x2 = x3) & n_guy(x2) & n_couple(x1))