What was the guage of the concessionaire ferrosur roca?
CREATE TABLE table_45436 (
    "Concessionaire" text,
    "FA Division(s)" text,
    "Gauge" text,
    "Length, km" real,
    "Takeover Date" text
)
SELECT "Gauge" FROM table_45436 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_45436 (
    "Concessionaire" text,
    "FA Division(s)" text,
    "Gauge" text,
    "Length, km" real,
    "Takeover Date" text
) ### Response: SELECT "Gauge" FROM table_45436 WHERE "Concessionaire" = 'ferrosur roca'