About: http://webisa.webdatacommons.org/212122046

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	They are rather interesting because the upper surface is a shiny green while the lower surface is a silky white.
http://www.w3.org/ns/prov#wasQuotedFrom	prairiepublic.org