How to rack a pool table<br>Start off with the 1-ball at the front of the rack. This is also called the " apex " of the rack Make sure that the 8-ball is in the center of the rack. The center of the rack is the middle of the triangle.
The 2-ball goes to the left of the 8-ball.
( z1 go :ARG1 ( z2 ball :quant 2 ) :ARG4 ( z3 left :ARG1 z2 :ARG2 ( z4 ball :quant 8 ) ) )