CREATE TABLE results (fastestlapspeed INTEGER, raceid VARCHAR(255)); CREATE TABLE races (raceid VARCHAR(255), year VARCHAR(255), name VARCHAR(255))
What is the average fastest lap speed in race named 'Monaco Grand Prix' in 2008 ?
    
SQL: SELECT AVG(T2.fastestlapspeed) FROM races AS T1 JOIN results AS T2 ON T1.raceid = T2.raceid WHERE T1.year = 2008 AND T1.name = "Monaco Grand Prix"