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_25 (mean_free_path VARCHAR, vacuum_range VARCHAR)
### Question:
What is Mean Free Path, when Vacuum Range is "medium vacuum"?
### Answer:
SELECT mean_free_path FROM table_name_25 WHERE vacuum_range = "medium vacuum"