what is the difference in height between key tower and 55 public square
CREATE TABLE table_204_649 (
    id number,
    "rank" number,
    "name" text,
    "image" number,
    "height\nft (m)" text,
    "floors" number,
    "year" number,
    "notes" text
)
SELECT ABS((SELECT "height\nft (m)" FROM table_204_649 WHERE "name" = 'key tower') - (SELECT "height\nft (m)" FROM table_204_649 WHERE "name" = '55 public square'))
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 difference in height between key tower and 55 public square ### Input: CREATE TABLE table_204_649 (
    id number,
    "rank" number,
    "name" text,
    "image" number,
    "height\nft (m)" text,
    "floors" number,
    "year" number,
    "notes" text
) ### Response: SELECT ABS((SELECT "height\nft (m)" FROM table_204_649 WHERE "name" = 'key tower') - (SELECT "height\nft (m)" FROM table_204_649 WHERE "name" = '55 public square'))