List of Americans by net worth

Columns: Rank | Name | Net worth ( USD ) | Age | Sources of wealth
1 | Jeff Bezos | $ 114 billion | 55 | Amazon | 2 | Bill Gates | $ 106 billion | 64 | Microsoft , Cascade Investment | 3 | Warren Buffett | $ 80.8 billion | 89 | Berkshire Hathaway | 4 | Mark Zuckerberg | $ 69.6 billion | 35 | Facebook | 5 | Larry Ellison | $ 65 billion | 75 | Oracle | 6 | Larry Page | $ 55.5 billion | 46 | Google | 7 | Sergey Brin | $ 53.5 billion | 45 | Google | 8 | Michael Bloomberg | $ 53.4 billion | 77 | Bloomberg L.P

Example questions:
When was the Billionaire who obtain their wealth from a database software and technology born ? | How old is the Billionaire to earn their wealth from a company that now has almost 20,000 employees ? | Which university did the wealthiest American Billionaire attend ? | How old is the American Billionaire that co-founded a company with Paul Allen ? | At what age did the youngest American on the list become a billionaire by net worth ?

Answers:
August 17 , 1944 | 77 | Princeton University | 64 | 23