user: Question: What is the game site of the game with the San Diego Chargers as the opponent?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Game site', 'Record', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 12', 'San Diego Chargers', 'L 3–23', 'Mile High Stadium', '0–1', 73564.0]
SQL:

assistant: SELECT "Game site" FROM "Table" WHERE "Opponent" = 'San Diego Chargers';