SELECT Citizenship FROM singer WHERE Birth_Year  <  1945 INTERSECT SELECT Citizenship FROM singer WHERE Birth_Year  >  1955
Show the citizenship shared by singers with birth year before 1945 and after 1955.
SELECT Citizenship FROM singer WHERE Birth_Year < 1945 INTERSECT SELECT Citizenship FROM singer WHERE Birth_Year > 1955
select citizenship from singer where birth_year < value intersect select citizenship from singer where birth_year > value
Show the citizenship shared by singers with birth year before 1945 and after 1955 .