This worker is feeding tree limbs into a grinder.
Someone complained about the limbs being on the ground.
The working is feeding the tree limbs into a grinder because someone complained about the mess.
exists e1 x1 x2 x3 x4.(n_worker(x1) & into(e1,x4) & n_grinder(x4) & Theme(e1,x2) & Actor(e1,x1) & v_feed(e1) & n_limb(x2) & of(x2,x3) & n_tree(x3))
exists e1 p1 x1 x2 x3 x4.(n_ground(x4) & n_limb(x2) & about(e1,x2) & on(x3,x4) & (x2 = x3) & Actor(e1,x1) & v_complain(e1) & n_person(x1))