About: http://webisa.webdatacommons.org/402638045

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	In addition, it has been demonstrated by Dan Guzman that MERGE is not immune from race conditions and other concurrency issues.
http://www.w3.org/ns/prov#wasQuotedFrom	sqlperformance.com