A man shovels snow on a cold day.
Nobody is shoveling.
Nobody cannot be a man.
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_day(x3) & a_cold(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_shovel(e1) & n_snow(x2) & n_man(x1))
-exists e1 x1.(Actor(e1,x1) & v_shovel(e1) & n_person(x1))