A woman sits in front of a low table with various raw ingredients on it.
Nobody is sitting.
If a woman is sitting at the table, then someone is there.  Nobody refers to no one sitting.
exists e1 s1 s2 s3 x1 x2 x3 x4.(on(e1,x1) & n_thing(x1) & with(e1,x4) & n_ingredient(x4) & a_raw(s3) & Theme(s3,x4) & a_various(s2) & Theme(s2,x4) & in(e1,x2) & of(x2,x3) & n_table(x3) & a_low(s1) & Theme(s1,x3) & n_front(x2) & Actor(e1,x1) & v_sit(e1) & n_woman(x1))
-exists e1 x1.(Actor(e1,x1) & v_sit(e1) & n_person(x1))