The World's Billionaires

Columns: No | Name | Net worth ( USD ) | Age | Nationality | Source ( s ) of wealth
1 | Bill Gates | $ 75.0 billion | 60 | United States | Microsoft | 2 | Amancio Ortega | $ 67.0 billion | 79 | Spain | Inditex | 3 | Warren Buffett | $ 60.8 billion | 85 | United States | Berkshire Hathaway | 4 | Carlos Slim | $ 50.0 billion | 76 | Mexico | América Móvil , Grupo Carso | 5 | Jeff Bezos | $ 45.2 billion | 52 | United States | Amazon | 6 | Mark Zuckerberg | $ 44.6 billion | 31 | United States | Facebook | 7 | Larry Ellison | $ 43.6 billion | 71 | United States | Oracle Corporation | 8 | Michael Bloomberg | $ 40.0 billion | 74 | United States | Bloomberg L.P | 9 | Charles Koch | $ 39.6 billion | 80 | United States | Koch Industries | 9 | David Koch | $ 39.6 billion | 75 | United States | Koch Industries

Example questions:
Which 2016 top 10 billionaire 's source of wealth comes from the company known as `` The World 's Largest Online Marketplace `` ? | For the 2016 top 10 billionaire co-founder of Microsoft Corporation , what is his net worth ? | For the 2016 top 10 billionaires whose net worth is less than Jeff Bezos , who was born the most recently ? | For the age of the 2016 top 10 billionaire who is not from the United States and also the youngest , when was this person born ?

Answers:
Jeff Bezos | $ 75.0 billion | Mark Zuckerberg | 28 January 1940