The World's Billionaires

Columns: No | Name | Net worth ( USD ) | Age | Nationality | Source ( s ) of wealth
1 | Bill Gates | $ 40.7 billion | 47 | United States | Microsoft | 2 | Warren Buffett | $ 30.5 billion | 72 | United States | Berkshire Hathaway | 3 | Karl and Theo Albrecht | $ 25.6 billion | 83 | Germany | Aldi Süd | 4 | Paul Allen | $ 20.1 billion | 50 | United States | Microsoft | 5 | Al-Waleed bin Talal | $ 17.7 billion | 46 | Saudi Arabia | Kingdom Holding Company | 6 | Larry Ellison | $ 16.6 billion | 58 | United States | Oracle Corporation | 7 | Alice Walton * | $ 16.5 billion | 54 | United States | Wal-Mart | 7 | Helen Walton * | $ 16.5 billion | 83 | United States | Wal-Mart | 7 | Jim Walton * | $ 16.5 billion | 55 | United States | Wal-Mart | 7 | John Walton * | $ 16.5 billion | 57 | United States | Wal-Mart | 7 | S. Robson Walton * | $ 16.5 billion | 59 | United States | Wal-Mart

Example questions:
This American , on the 2003 rankings of World 's Billionaires , is owner of an American multinational conglomerate holding company headquartered in Omaha , Nebraska ? | What country was an entrepreneur from who was on the 2003 rankings of World 's Billionaires and co-owned a discount supermarket and passed in 2010 ? | Which one of the Walton siblings , on the 2003 rankings of World 's Billionaires and are known for Wal-Mart , was born on June 7 , 1948 ? | Born in 1954 , this American businessman , , on the 2003 rankings of World 's Billionaires , is known for a company that is headquartered in Redwood Shores ? | What American , on the 2003 rankings of World 's Billionaires , was worth 16.5 billion and passed on April 19 , 2007 ?

Answers:
Warren Buffett | Germany | Jim Walton | Larry Ellison | Helen Walton