what was the difference in gold medals between russia and china ?
CREATE TABLE table_203_707 (
    id number,
    "rank" number,
    "npc" text,
    "gold" number,
    "silver" number,
    "bronze" number,
    "total" number
)
SELECT (SELECT "gold" FROM table_203_707 WHERE "npc" = 'china') - (SELECT "gold" FROM table_203_707 WHERE "npc" = 'russia')
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 difference in gold medals between russia and china ? ### Input: CREATE TABLE table_203_707 (
    id number,
    "rank" number,
    "npc" text,
    "gold" number,
    "silver" number,
    "bronze" number,
    "total" number
) ### Response: SELECT (SELECT "gold" FROM table_203_707 WHERE "npc" = 'china') - (SELECT "gold" FROM table_203_707 WHERE "npc" = 'russia')