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

### Instruction:
Which Mission has a Launch Date of december 30, 1970; 14:50 gmt?

### Inputs:
table_name: table, columns: ['Rocket launch', 'Launch Date', 'Mission', 'Institutional authority', 'Launch Site', 'Outcomes', 'Derivatives']

### Response:
SELECT Mission FROM table WHERE Launch Date = december 30, 1970; 14:50 gmt