user: Question: What is the average Season, when First Broadcast is January 23, 1981?
Columns: ['Title', 'Season', 'Director', 'Teleplay', 'First Broadcast']
Types: ['text', 'real', 'text', 'text', 'text']
Sample row: ['The Golden Spiders', 1.1, "Michael O'Herlihy", 'Wallace Ware + Peter Nasco', 'January 16, 1981']
SQL:

assistant: SELECT AVG("Season") FROM "Table" WHERE "First Broadcast" = 'January 23, 1981';