ฝ่ายตรงข้ามคือใครเมื่อเล่นเกมที่สนามเชีย สเตเดี้ยม?ไม่จำเป็นที่จะต้องใช้โต๊ะทั้งหมด
Who is the opposing team when the game was played on the Shea Stadium?It is not neccessary to use all the tables.
 table_21665:  "Week" [ real]  "Date" [ text]  "Opponent" [ text]  "Stadium" [ text]  "Result" [ text]  "Record" [ text]  "Streak" [ text]  "Attendance" [ real] 
SELECT "Opponent" FROM table_21665 WHERE "Stadium" = 'Shea Stadium'