How to drill a bowling ball<br>Choose a ball. Choose the bowling ball that's right for you, based its weight and the materials it is made of. [substeps] Bowling balls can be made of plastic (the cheapest balls), urethane, reactive resin, or particle.
Plastic is the cheapest and lightest option. 
( z1 option :domain ( z2 plastic ) :ARG1-of ( z3 have-degree :ARG2 ( z4 and :op ( z5 cheap :ARG1 z1 ) :op ( z6 light :ARG1 z1 ) ) :ARG3 ( z7 most ) ) )