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

### Instruction:
How many days were the station of Soyuz 35 in flight down were in orbit?

### Inputs:
table_name: table, columns: ['Expedition', 'Crew', 'Launch date', 'Flight up', 'Landing date', 'Flight down', 'Duration (days)']

### Response:
SELECT Duration (days) FROM table WHERE Flight down = Soyuz 35