Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_94 (parameter VARCHAR, best_fit__wmap_only_ VARCHAR, symbol VARCHAR)
### Question:
What is the parameter when the best fit (WMAP only) is .9 ± .1, and symbol is a?
### Answer:
SELECT parameter FROM table_name_94 WHERE best_fit__wmap_only_ = ".9 ± .1" AND symbol = "a"