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_39 (sensor_resolution VARCHAR, cpu_usage VARCHAR, camera VARCHAR)
### Question:
What was the sensor resolution with a minimal CPU usage for a naturalpoint trackir 3 pro?
### Answer:
SELECT sensor_resolution FROM table_name_39 WHERE cpu_usage = "minimal" AND camera = "naturalpoint trackir 3 pro"