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"
Count the number of different official languages corresponding to countries that players who play Defender are from.
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 ''
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 = value
Count the number of different official languages corresponding to countries that players who play Defender are from .