About: http://webisa.webdatacommons.org/290351481

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	Reversion of reversible photochromic compounds may also be affected by the absence or presence of electromagnetic radiation in a range of wavelengths, notably light and therefore by darkness, being the absence of light.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com