About: http://webisa.webdatacommons.org/391983372

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	A ringflash or dedicated macroflash is a common tool for creating shadowless lighting for close-ups and is commonly used in medical applications such as dentistry.
http://www.w3.org/ns/prov#wasQuotedFrom	ephotozine.com