About: http://webisa.webdatacommons.org/144382169

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	From what I have read the ideal light source is one that comes from above, behind and to the side (non dominate hand i.e. if left handed over the right shoulder vis-a-vis for right handers).
http://www.w3.org/ns/prov#wasQuotedFrom	gettingthingsdone.com