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

### Instruction:
Who is the opposing team when the game was played on the Shea Stadium?

### Inputs:
table_name: table, columns: ['Week', 'Date', 'Opponent', 'Stadium', 'Result', 'Record', 'Streak', 'Attendance']

### Response:
SELECT Opponent FROM table WHERE Stadium = Shea Stadium