What is the April 14 rank when the Mar 3rd is nr, and the April 21 is 13?
CREATE TABLE table_44137 (
    "Poll" text,
    "Pre- season" text,
    "Mar 3" text,
    "Mar 17" text,
    "Mar 24" text,
    "Mar 31" text,
    "April 7" text,
    "April 14" text,
    "April 21" text,
    "April 28" text,
    "May 5" text,
    "May 12" text,
    "May 19" text,
    "May 26" text,
    "Final" text
)
SELECT "April 14" FROM table_44137 WHERE "Mar 3" = 'nr' AND "April 21" = '13'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the April 14 rank when the Mar 3rd is nr, and the April 21 is 13? ### Input: CREATE TABLE table_44137 (
    "Poll" text,
    "Pre- season" text,
    "Mar 3" text,
    "Mar 17" text,
    "Mar 24" text,
    "Mar 31" text,
    "April 7" text,
    "April 14" text,
    "April 21" text,
    "April 28" text,
    "May 5" text,
    "May 12" text,
    "May 19" text,
    "May 26" text,
    "Final" text
) ### Response: SELECT "April 14" FROM table_44137 WHERE "Mar 3" = 'nr' AND "April 21" = '13'