What was the weekly rank by Virgin media for the title aired on May 20, 2010?
CREATE TABLE table_3668 (
    "#" real,
    "Title" text,
    "Timeslot" text,
    "Air date" text,
    "Viewers (000s)" real,
    "Weekly Rank Sky1" real,
    "Weekly Rank Virgin Media" real
)
SELECT MIN("Weekly Rank Virgin Media") FROM table_3668 WHERE "Air date" = 'May 20, 2010'
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 was the weekly rank by Virgin media for the title aired on May 20, 2010? ### Input: CREATE TABLE table_3668 (
    "#" real,
    "Title" text,
    "Timeslot" text,
    "Air date" text,
    "Viewers (000s)" real,
    "Weekly Rank Sky1" real,
    "Weekly Rank Virgin Media" real
) ### Response: SELECT MIN("Weekly Rank Virgin Media") FROM table_3668 WHERE "Air date" = 'May 20, 2010'