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_20 (platelet_count VARCHAR, partial_thromboplastin_time VARCHAR)
### Question:
Which Platelet count has a Partial thromboplastin time of prolonged or unaffected?
### Answer:
SELECT platelet_count FROM table_name_20 WHERE partial_thromboplastin_time = "prolonged or unaffected"