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_22 (rank INTEGER, time VARCHAR)
### Question:
Who placed highest with a time of 1:47.70?
### Answer:
SELECT MIN(rank) FROM table_name_22 WHERE time = "1:47.70"