About: http://webisa.webdatacommons.org/6192280

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Instead of just adding a few planets into orbit, you have to combine planet types (ice, iron, gas, rock) to form new types of planets, avoid black holes, keep certain types of planets in certain levels of orbit, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	148apps.com