CREATE TABLE table_40591 ("Result" CLOB, "Record" CLOB, "Opponent" CLOB, "Method" CLOB, "Date" CLOB, "Round" FLOAT, "Location" CLOB, "Notes" CLOB)

What is Date, when Result is Loss, and when Method is Submission (Armbar)?
SELECT "Date" FROM table_40591 WHERE "Result" = 'loss' AND "Method" = 'submission (armbar)'
SELECT "Date" FROM "table_40591" WHERE "Method" = 'submission (armbar)' AND "Result" = 'loss'