Rednecks throwing knives.
The people are sharpening their knives.
Not all people are rednecks. They cannot be throwing knives while sharpening them.
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_throw(e1) & n_knife(x3) & (x1 = x2) & n_redneck(x1))
exists e1 x1 x2.(n_knife(x2) & of(x2,x1) & n_thing(x1) & n_people(x1) & Theme(e1,x2) & Actor(e1,x1) & v_sharpen(e1))