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

### Instruction:
what is the year when the location is yankee stadium and the result is 23-23

### Inputs:
table_name: table, columns: ['Year', 'Date', 'Winner', 'Result', 'Location']

### Response:
SELECT AVG Year FROM table WHERE Location = yankee stadium AND Result = 23-23