user: Question: Who is the required actor when Robert Austin was the actor in the original production?
Columns: ['Actor in original production', 'Actor required', 'GamePlan', 'FlatSpin', 'RolePlay']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Bill Champion', 'Male, younger', 'Troy Stephens', 'Sam Berryman', 'Justin Lazenby']
SQL:

assistant: SELECT "Actor required" FROM "Table" WHERE "Actor in original production" = 'Robert Austin';