About: http://webisa.webdatacommons.org/165703073

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	Within periods, colors mostly grade from dark at the bottom to light at the top.
http://www.w3.org/ns/prov#wasQuotedFrom	harvard.edu