user: Question: Who did the Texan's play on Week 4?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Game site', 'Record', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['HOF', 'August 5, 2002', 'at New York Giants', 'L 34–17', 'Fawcett Stadium', '0–1', 22461.0]
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Week" = '4';