which is the difference between kw for allenheads and seaham
CREATE TABLE table_204_270 (
    id number,
    "transmitter" text,
    "kw" number,
    "bbca" number,
    "bbcb" number,
    "d3&4" number,
    "sdn" number,
    "arqa" number,
    "arqb" number,
    "pol." text,
    "a.g." text
)
SELECT ABS((SELECT "kw" FROM table_204_270 WHERE "transmitter" = 'allenheads') - (SELECT "kw" FROM table_204_270 WHERE "transmitter" = 'seaham'))
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: which is the difference between kw for allenheads and seaham ### Input: CREATE TABLE table_204_270 (
    id number,
    "transmitter" text,
    "kw" number,
    "bbca" number,
    "bbcb" number,
    "d3&4" number,
    "sdn" number,
    "arqa" number,
    "arqb" number,
    "pol." text,
    "a.g." text
) ### Response: SELECT ABS((SELECT "kw" FROM table_204_270 WHERE "transmitter" = 'allenheads') - (SELECT "kw" FROM table_204_270 WHERE "transmitter" = 'seaham'))