What Nature reserve number was established on 19961220 20.12.1996
CREATE TABLE table_26013618_1 (
    nsg_nr INTEGER,
    date_established VARCHAR
)
SELECT MIN(nsg_nr) FROM table_26013618_1 WHERE date_established = "19961220 20.12.1996"
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 Nature reserve number was established on 19961220 20.12.1996 ### Input: CREATE TABLE table_26013618_1 (
    nsg_nr INTEGER,
    date_established VARCHAR
) ### Response: SELECT MIN(nsg_nr) FROM table_26013618_1 WHERE date_established = "19961220 20.12.1996"