Question: Who is best known for founding on of the United Kingdom's largest retail chains of mass market computers superstores?
Sentence (from "PC World (retailer)"): PC World is one of the United Kingdom's largest retail chains of mass market computers superstores. Established in November 1991, it became part of Dixons Retail in February 1993 and then part of Dixons Carphone after the merger of Dixons Retail and Carphone Warehouse in August 2014.
Relevant evidence: Yes