About: http://webisa.webdatacommons.org/261335592

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	No. Some good examples of each class are sufficient, I think, for children to get the idea ??? that the Universe is a big, amazing place, and planets come in basic types.
http://www.w3.org/ns/prov#wasQuotedFrom	centauri-dreams.org