CREATE TABLE table_12798 ("Track" FLOAT, "Title" CLOB, "Songwriter ( s ) " CLOB, "Production credits" CLOB, "Time" CLOB)

Who was the songwriter for Track 4, produced by nigel wright and john smits?
SELECT "Songwriter(s)" FROM table_12798 WHERE "Production credits" = 'nigel wright and john smits' AND "Track" = '4'
SELECT "Songwriter(s)" FROM "table_12798" WHERE "Production credits" = 'nigel wright and john smits' AND "Track" = '4'