What was the guage of the concessionaire ferrosur roca?
CREATE TABLE table_name_8 (
    gauge VARCHAR,
    concessionaire VARCHAR
)
SELECT gauge FROM table_name_8 WHERE concessionaire = "ferrosur roca"
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 guage of the concessionaire ferrosur roca? ### Input: CREATE TABLE table_name_8 (
    gauge VARCHAR,
    concessionaire VARCHAR
) ### Response: SELECT gauge FROM table_name_8 WHERE concessionaire = "ferrosur roca"