What is the silver medal count of the team that finished with 8 bronze medals?
CREATE TABLE table_58557 (
    "Rank" text,
    "Nation" text,
    "Gold" real,
    "Silver" real,
    "Bronze" real,
    "Total" real
)
SELECT SUM("Silver") FROM table_58557 WHERE "Bronze" = '8'
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 silver medal count of the team that finished with 8 bronze medals? ### Input: CREATE TABLE table_58557 (
    "Rank" text,
    "Nation" text,
    "Gold" real,
    "Silver" real,
    "Bronze" real,
    "Total" real
) ### Response: SELECT SUM("Silver") FROM table_58557 WHERE "Bronze" = '8'