About: http://webisa.webdatacommons.org/354822376

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	Additional steps at the molecular level, involving the addition of metal ions or other molecules, are necessary to achieve blue???which helps explain the color's scarcity.
http://www.w3.org/ns/prov#wasQuotedFrom	wsj.com