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

### Instruction:
Who is the home team on 31 January 1951 when away team was Sheffield United?

### Inputs:
table_name: table, columns: ['Tie no', 'Home team', 'Score', 'Away team', 'Date']

### Response:
SELECT Home team FROM table WHERE Date = 31 january 1951 AND Away team = sheffield united