During stage 21, who held the Intergiro classification?
CREATE TABLE table_70236 (
    "Stage" text,
    "Winner" text,
    "General classification" text,
    "Points classification" text,
    "Mountains classification" text,
    "Young rider classification" text,
    "Intergiro classification" text,
    "Trofeo Fast Team" text
)
SELECT "Intergiro classification" FROM table_70236 WHERE "Stage" = '21'
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: During stage 21, who held the Intergiro classification? ### Input: CREATE TABLE table_70236 (
    "Stage" text,
    "Winner" text,
    "General classification" text,
    "Points classification" text,
    "Mountains classification" text,
    "Young rider classification" text,
    "Intergiro classification" text,
    "Trofeo Fast Team" text
) ### Response: SELECT "Intergiro classification" FROM table_70236 WHERE "Stage" = '21'