HOW MANY DISTINCT OFFICIAL LANGUAGES ARE THERE AMONG COUNTRIES  OF PLAYERS WHOSE POSITIONS ARE DEFENDERS
SELECT count ( DISTINCT T1.Official_native_language )  FROM country AS T1 JOIN match_season AS T2 ON T1.Country_id   =   T2.Country WHERE T2.Position   =   "Defender"
distinct official languages among countries of players whose positions are defenders refers to COUNT(DISTINCT T1.Official_native_language); players with positions as defenders refers to T2.Position = 'Defender';