About: http://webisa.webdatacommons.org/192845049

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	The text below is an example of what constraint type: The value in the manager_id column of the EMPLOYEES table must match a value in the employee_id column in the EMPLOYEES table.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com