A kid is holding a rubber mallet.
The kid is holding a knife in each hand.
One cannot be holding a rubber mallet and a knife in each hand simultaneously.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_mallet(x2) & of(x2,x3) & n_rubber(x3) & n_kid(x1))
exists e1 x1 x2.(n_kid(x1) & all x3.(n_hand(x3) -> in(e1,x3)) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_knife(x2))