CREATE TABLE table_9409 ("Name" TEXT, "Country" TEXT, "Town" TEXT, "Height metres / ft" TEXT, "Structural type" TEXT, "Held record" TEXT)

What is the height in Rouen?
SELECT "Height metres / ft" FROM table_9409 WHERE "Town" = 'rouen'
SELECT "Height metres / ft" FROM "table_9409" WHERE "Town" = 'rouen'