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_29521180_35 (quarterfinals VARCHAR, athlete VARCHAR)
### Question:
How many athletes were named federico muller?
### Answer:
SELECT COUNT(quarterfinals) FROM table_29521180_35 WHERE athlete = "Federico Muller"