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

### Instruction:
What type has a Date of 8 dec 16, and a Ship of duchess of cornwall?

### Inputs:
table_name: table, columns: ['Date', 'Ship', 'Type', 'Nationality', 'Tonnage GRT']

### Response:
SELECT Type FROM table WHERE Date = 8 dec 16 AND Ship = duchess of cornwall