Table: football_rivalry_3
Columns: year
date
home_team
result
visiting_team
venue

Question: When was the game that had the St. Louis Rams as visiting team and resulted in a score of 26-0?
SQL: SELECT "date" FROM football_rivalry_3 WHERE "visiting_team" = 'st. louis rams' AND "result" = '26-0'

Question: What date(s) was the game(s) at Candlestick Park?
SQL: SELECT "date" FROM football_rivalry_3 WHERE "venue" = 'candlestick park'