Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Name the market cap where 2013 rev is 2.8

### Inputs:
table_name: table, columns: ['April 2013 Cum. Rank', 'Name', 'Rank 2012', 'Rank 2013', 'Base', '2013 rev (bil. USD )', '2013 Profit (mil. USD )', 'Assets 2013 (bil.$)', 'Market cap March 15 (mil.$)']

### Response:
SELECT Market cap March 15 (mil.$) FROM table WHERE 2013 rev (bil. USD ) = 2.8