The National Park Trust identified 20 high-priority sites - including the Blue Ridge Parkway in North Carolina and Virginia and Everglades National Park in Florida - as areas with private property that could be sold.
There are more than 20 high-priority sites that have private property that can be sold. 
( z1 site :quant ( z2 more-than :op 20 ) :ARG1-of ( z3 prioritize :ARG1-of ( z4 high ) ) :ARG0-of ( z5 have :ARG1 ( z6 property :ARG1-of ( z7 private ) :ARG1-of ( z8 sell :ARG1-of ( z9 possible ) ) ) ) )