A man wearing jeans and a backpack stands on the sidewalk.
A man stands on a bear.
Either the man stands on a sidewalk or a bear. Standing on a bear is unusual
exists e1 e2 x1 x2 x3 x4 x5 x6.(n_sidewalk(x6) & on(e2,x6) & Actor(e2,x1) & v_stand(e2) & subset_of(x5,x1) & n_backpack(x5) & subset_of(x2,x1) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_jeans(x4) & (x2 = x3) & n_man(x2))
exists e1 x1 x2.(on(e1,x2) & n_bear(x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))