Task: Text to Code
Input (English): Step 1: For each row in races table, find corresponding rows in circuits table and in constructorStandings table.
Step 2: find the maximum positionText in the results of step 1 whose country equals Monaco Grand Prix
Output (English): SELECT Max ( T3.positionText ) FROM circuits AS T1 JOIN races AS T2 ON T1.circuitId = T2.circuitId JOIN constructorStandings AS T3 ON T2.raceId = T3.raceId WHERE T1.country = "Monaco Grand Prix"