A woman is sweeping the brick ground in an urban environment with a broom.
Nobody is sweeping.
A woman is sweeping so the statement that nobody is sweeping is false.
exists e1 s1 x1 x2 x3 x4 x5.(n_ground(x2) & of(x2,x3) & n_brick(x3) & Theme(e1,x2) & Actor(e1,x1) & v_sweep(e1) & in(x2,x4) & with(x4,x5) & n_broom(x5) & n_environment(x4) & a_urban(s1) & Theme(s1,x4) & n_woman(x1))
-exists s1 x1.(Theme(s1,x1) & a_sweeping(s1) & n_person(x1))