Question: When was the supermarket founded by   Mary Ann Sainsbury's husband founded? 
Sentence (from "Sainsbury's"): In 1995, Tesco overtook Sainsbury's to become the market leader, and Asda became the second largest in 2003, demoting Sainsbury's to third place for most of the subsequent period until January 2014, when Sainsbury's regained second place.
Relevant evidence: No