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_97 (position INTEGER, speed VARCHAR)
### Question:
What is the average Position, when Speed is "143.5km/h"?
### Answer:
SELECT AVG(position) FROM table_name_97 WHERE speed = "143.5km/h"