Write SQL query to solve given problem: Among the root beer brands that do not advertise on Twitter, how many of them have root beers sold in August, 2014?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT COUNT(T1.BrandID) FROM rootbeer AS T1 INNER JOIN `transaction` AS T2 ON T1.RootBeerID = T2.RootBeerID INNER JOIN rootbeerbrand AS T3 ON T1.BrandID = T3.BrandID WHERE T2.TransactionDate LIKE '2014-08%' AND T3.Twitter IS NULL