Return the colleges that have players who play the Midfielder position, as well as players who play the Defender position.
SELECT College FROM match_season WHERE POSITION  =  "Midfielder" INTERSECT SELECT College FROM match_season WHERE POSITION  =  "Defender"
SELECT College FROM match_season WHERE POSITION  =  "Midfielder" INTERSECT SELECT College FROM match_season WHERE POSITION  =  "Defender"
[{'College': 'Maryland'}]