Write SQL query to solve given problem: Show the keywords of the paper that was presented at "International Radar Symposium" in 2012.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.Keyword FROM Paper AS T1 INNER JOIN Conference AS T2 ON T1.ConferenceId = T2.Id WHERE T2.FullName = 'International Radar Symposium' AND T1.Year = 2012