Which property is best used to hold a URL link to a law that created an item ?
Example: https://www.wikidata.org/wiki/Q30061575 Lewis and Clark National Historical Park was created by H.R. 3819 https://www.congress.gov/bill/108th-congress/house-bill/3819
Thanks in advance experts, -Thad +ThadGuidry https://www.google.com/+ThadGuidry