Table schema:
CREATE TABLE results (fastestlapspeed INTEGER, raceid VARCHAR); CREATE TABLE races (raceid VARCHAR, year VARCHAR, name VARCHAR)

Question: 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"