Write SQL query to solve given problem: What is the average sentiment polarity score of the Cooking Fever app? Indicate the age group that the app is targeted at.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT AVG(T2.Sentiment_Polarity), T1."Content Rating" FROM playstore AS T1 INNER JOIN user_reviews AS T2 ON T1.App = T2.App WHERE T1.App = 'Cooking Fever'