Table: chiefs_1979
Columns: week
date
opponent
result
attendance

Question: Who is the opponent on September 9, 1979?
SQL: SELECT "opponent" FROM chiefs_1979 WHERE "date" = 'september 9, 1979'

Question: What is the sum of the week for the Denver Broncos?
SQL: SELECT SUM("week") FROM chiefs_1979 WHERE "opponent" = 'denver broncos'

Question: What is the attendance number for December 2, 1979?
SQL: SELECT SUM("attendance") FROM chiefs_1979 WHERE "date" = 'december 2, 1979'