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

### Instruction:
In which host city was Margaret Thatcher the President-in-Office in 1981?

### Inputs:
table_name: table, columns: ['Year', 'Date', 'Type', 'EU Council presidency', 'President-in-Office', 'Host city']

### Response:
SELECT Host city FROM table WHERE President-in-Office = margaret thatcher AND Year = 1981