A man is cutting ice at night.
their is no sun
If it is at night, it follows that there is no sun.
exists e1 x1 x2 x3.(at(e1,x3) & n_night(x3) & Theme(e1,x2) & Actor(e1,x1) & v_cut(e1) & n_ice(x2) & n_man(x1))
(x)