Question: WHo is an American heiress to the fortune of Wal-Mart Stores, and the daughter of at one point the richest American and the eleventh-richest woman in the world?
Sentence (from "Helen Walton"): Helen Robson Kemper Walton (December 3, 1919 – April 19, 2007) was the wife of Wal-Mart and Sam's Club founder Sam Walton.
Relevant evidence: No