Table: kansas_city_2004_chiefs
Columns: week
date
opponent
result
attendance

Question: What was the date for the game in week 7?
SQL: SELECT "date" FROM kansas_city_2004_chiefs WHERE "week" = 7

Question: On what date was the attendance of the crowd 78,431?
SQL: SELECT "date" FROM kansas_city_2004_chiefs WHERE "attendance" = '78,431'