What is the official language used in the country the name of whose head of state is Beatrix.
SELECT T2.Language FROM country AS T1 JOIN countrylanguage AS T2 ON T1.Code  =  T2.CountryCode WHERE T1.HeadOfState  =  "Beatrix" AND T2.IsOfficial  =  "T"
SELECT T2.Language FROM country AS T1 JOIN countrylanguage AS T2 ON T1.Code  =  T2.CountryCode WHERE T1.HeadOfState  =  "Beatrix" AND T2.IsOfficial  =  "T"
[{'Language': 'Dutch'}, {'Language': 'Dutch'}, {'Language': 'Papiamento'}, {'Language': 'Dutch'}]