What is the average amount of silver medals Montenegro, who has less than 15 bronze and more than 11 total medals, has?
CREATE TABLE table_51993 (
    "Nation" text,
    "Gold" real,
    "Silver" real,
    "Bronze" real,
    "Total" real
)
SELECT AVG("Silver") FROM table_51993 WHERE "Bronze" < '15' AND "Nation" = 'montenegro' AND "Total" > '11'
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 is the average amount of silver medals Montenegro, who has less than 15 bronze and more than 11 total medals, has? ### Input: CREATE TABLE table_51993 (
    "Nation" text,
    "Gold" real,
    "Silver" real,
    "Bronze" real,
    "Total" real
) ### Response: SELECT AVG("Silver") FROM table_51993 WHERE "Bronze" < '15' AND "Nation" = 'montenegro' AND "Total" > '11'