user: Question: What is the average high position for the album Unwritten?
Columns: ['Position', 'Album Title', 'Artist', 'Highest Position', 'Sales']
Types: ['real', 'text', 'text', 'real', 'real']
Sample row: [1.0, 'Scissor Sisters', 'Scissor Sisters', 1.0, 1594259.0]
SQL:

assistant: SELECT AVG("Highest Position") FROM "Table" WHERE "Album Title" = 'Unwritten';