Two men in black outfits have backpacks.
The ninjas are outfitted with their gear.
Not all the ninjas are black men, and not all backpacks contains gear
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 x1 x2.(n_gear(x2) & of(x2,x1) & n_thing(x1) & n_ninja(x1) & with(e1,x2) & Theme(e1,x1) & v_outfit(e1))