What is the parameter when the best fit (WMAP only) is .9 .1, and symbol is a?
CREATE TABLE table_name_94 (
    parameter VARCHAR,
    best_fit__wmap_only_ VARCHAR,
    symbol VARCHAR
)
SELECT parameter FROM table_name_94 WHERE best_fit__wmap_only_ = ".9 ± .1" AND symbol = "a"
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 parameter when the best fit (WMAP only) is .9 .1, and symbol is a? ### Input: CREATE TABLE table_name_94 (
    parameter VARCHAR,
    best_fit__wmap_only_ VARCHAR,
    symbol VARCHAR
) ### Response: SELECT parameter FROM table_name_94 WHERE best_fit__wmap_only_ = ".9 ± .1" AND symbol = "a"