About: http://webisa.webdatacommons.org/194363318

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	I only have 8 columns that consist of: INT, VARCHAR and BIGINT. Only the first column is a primary key and another is INDEXED. Considering what you wrote, it is likely that the VARCHAR column can be subject to an overflow.
http://www.w3.org/ns/prov#wasQuotedFrom	percona.com