user: Question: What is the local/network with an Ad frequency of 15 Minutes?
Columns: ['Time', 'Show Name', 'Local/Networked', 'Ad Freq', 'News Freq']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['6:00am–8:00am', "Burke's Backyard", 'Networked (from Sydney)', '20 Minutes', '60 Minutes']
SQL:

assistant: SELECT "Local/Networked" FROM "Table" WHERE "Ad Freq" = '15 Minutes';