There are two workers, one on a ladder, against a blue wall with a yellow-and-black stripe.
One man works harder than the other.
There is no information to support  that one of the two workers is working harder than the other.
exists p1 s1 s2 x1 x2 x3.(against(p1,x2) & with(x2,x3) & n_stripe(x3) & a_yellow-and-black(s2) & Theme(s2,x3) & n_wall(x2) & a_blue(s1) & Theme(s1,x2) & exists x4 x5 x6.((x1 = x4) & rel(x4,x5) & on(x5,x6) & n_ladder(x6) & n_thing(x5) & card_eq_1(x5) & n_worker(x4) & card_eq_2(x4)))
exists e1 s1 x1 x2.(n_other(x2) & than(e1,x2) & a_harder(s1) & Manner(e1,s1) & Actor(e1,x1) & v_work(e1) & n_man(x1) & card_eq_1(x1))