If legalization reduced current narcotics enforcement costs by one-third to one-fourth, it might save $6 - $9 billion per year.
Costs reduced to by half will save 6 to 9 billion dollars
This statement is definitely incorrect as the estimates are "one-third to one-fourth." The system may have missed this.
( z1 save :ARG0 ( z2 reduce :ARG1 ( z3 cost ) :ARG2 ( z4 half ) ) :ARG1 ( z5 between :op ( z6 monetary-quantity :quant 6000000000 :unit ( z7 dollar ) ) :op ( z8 monetary-quantity :quant 9000000000 :unit ( z9 dollar ) ) ) )