Of all the All-star players who played in the Eastern Conference for no more than 5 minutes, how many went to Illinois College?
Eastern conference refers to conference = 'East'; no more than 5 minutes refers to minutes < 5
SELECT COUNT(DISTINCT T1.playerID) FROM players AS T1 INNER JOIN player_allstar AS T2 ON T1.playerID = T2.playerID WHERE T2.conference = 'East' AND T2.minutes <= 5 AND T1.college = 'Illinois'