CREATE TABLE genre (g_name TEXT, rating TEXT, most_popular_in TEXT)
CREATE TABLE song (song_name TEXT, artist_name TEXT, country TEXT, f_id DECIMAL, genre_is TEXT, rating DECIMAL, languages TEXT, releasedate TIME, resolution DECIMAL)
CREATE TABLE files (f_id DECIMAL, artist_name TEXT, file_size TEXT, duration TEXT, formats TEXT)
CREATE TABLE artist (artist_name TEXT, country TEXT, gender TEXT, preferred_genre TEXT)

What are the names of all singers that are from the UK and released a song in English?
SELECT artist_name FROM artist WHERE country = "UK" INTERSECT SELECT T1.artist_name FROM artist AS T1 JOIN song AS T2 ON T1.artist_name = T2.artist_name WHERE T2.languages = "english"
SELECT "artist_name" FROM "artist" WHERE "UK" = "country" INTERSECT SELECT "T1"."artist_name" FROM "artist" AS "T1" JOIN "song" AS "T2" ON "T1"."artist_name" = "T2"."artist_name" AND "T2"."languages" = "english"