Table:
text: 2008 Tour de Georgia
Jersey progress
Jersey progress
Stage_Winner General_Classification Young_Classification Sprint_Classification Aggressive_Rider Team_Classification
0 Stage 1 ( Ivan Dominguez ) Ivan Dominguez Nicholas Sanderson Ivan Dominguez Scott Nydam Toyota-United
0 Stage 2 ( Juan José Haedo ) Ivan Dominguez Nicholas Sanderson Ivan Dominguez Rhys Pollack Toyota-United
0 Stage 3 ( Greg Henderson ) Greg Henderson Tyler Farrar Greg Henderson Rory Sutherland Team High Road
0 Stage 4 ( Slipstream ) Greg Henderson Trent Lowe Greg Henderson Rory Sutherland Slipstream-Chipotle
0 Stage 5 (Richard England) Trent Lowe Trent Lowe Greg Henderson Tim Johnson Slipstream-Chipotle
0 Stage 6 ( Kanstantin Siutsou ) Kanstantin Siutsou Trent Lowe Greg Henderson Neil Shirley Astana Team

Question: What young classification does an aggressive Tim Johnson rider have in the 2008 Tour de Georgia?