About: http://webisa.webdatacommons.org/440826611

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	Challenges in Measuring Online Advertising SystemsSaikat Guha, Bin Cheng, and Paul Francis November 2010AbstractOnline advertising supports many Internet services, such as search, email, and social networks.
http://www.w3.org/ns/prov#wasQuotedFrom	microsoft.com