user: Question: What is the year began for the site with free userpics cost of $1 and a userpics paid value of N/A?
Columns: ['Name', 'Year Began', 'Registration', 'Userpics Free', 'Userpics Paid', 'Monthly Cost for Paid Account', 'Yearly Cost for Paid Account', 'Permanent Account']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Academ', '2006', 'Open', 'Unknown', 'Unknown', 'Unknown', 'Unknown', 'Unknown']
SQL:

assistant: SELECT "Year Began" FROM "Table" WHERE "Userpics Paid" = 'N/A' AND "Userpics Free" = '1';