List the date when Jeremy Edwards and Grace Adams-Short were the panelists.
CREATE TABLE table_20421 (
    "Episode Number" real,
    "Air Date" text,
    "Guest Host" text,
    "Musical Guest (Song performed)" text,
    "Who knows the most about the guest host? panelists" text
)
SELECT "Air Date" FROM table_20421 WHERE "Who knows the most about the guest host? panelists" = 'Jeremy Edwards and Grace Adams-Short'
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: List the date when Jeremy Edwards and Grace Adams-Short were the panelists. ### Input: CREATE TABLE table_20421 (
    "Episode Number" real,
    "Air Date" text,
    "Guest Host" text,
    "Musical Guest (Song performed)" text,
    "Who knows the most about the guest host? panelists" text
) ### Response: SELECT "Air Date" FROM table_20421 WHERE "Who knows the most about the guest host? panelists" = 'Jeremy Edwards and Grace Adams-Short'