A man, in a hat, under a tree, sweeping the ground.
The ground is dirty.
A man sweeping the ground means the ground is dirty.
exists e1 x1 x2 x3 x4 x5.(n_ground(x5) & a_topic(x1) & Theme(e1,x5) & Actor(e1,x4) & v_sweep(e1) & (x1 = x4) & under(x1,x3) & n_tree(x3) & in(x1,x2) & n_hat(x2) & n_man(x1))
exists s1 x1.(n_ground(x1) & Theme(s1,x1) & a_dirty(s1))