CREATE TABLE table_7149 ("Volume:Issue" TEXT, "Issue Date ( s ) " TEXT, "Weeks on Top" FLOAT, "Song" TEXT, "Artist" TEXT)

What is Volume:Issue, when Artist is Elton John, and when Weeks on Top is 4?
SELECT "Volume:Issue" FROM table_7149 WHERE "Artist" = 'elton john' AND "Weeks on Top" = '4'
SELECT "Volume:Issue" FROM "table_7149" WHERE "Artist" = 'elton john' AND "Weeks on Top" = '4'