Table: freetrack_specs
Columns: camera
sensor_resolution
sensor
output
cpu_usage
ir_leds

Question: What was the sensor with a resolution of 355x288 for a Naturalpoint Trackir 3?
SQL: SELECT "sensor" FROM freetrack_specs WHERE "sensor_resolution" = '355x288' AND "camera" = 'naturalpoint trackir 3'

Question: What was the sensor resolution with a minimal CPU usage for a naturalpoint trackir 3 pro?
SQL: SELECT "sensor_resolution" FROM freetrack_specs WHERE "cpu_usage" = 'minimal' AND "camera" = 'naturalpoint trackir 3 pro'

Question: What was the output with no IR LEDs?
SQL: SELECT "output" FROM freetrack_specs WHERE "ir_leds" = 'no'

Question: What sensor has a resolution of 640x480 with small CPU usage, jpeg compressed output and a camera of sony playstation eyetoy?
SQL: SELECT "sensor" FROM freetrack_specs WHERE "sensor_resolution" = '640x480' AND "cpu_usage" = 'small' AND "output" = 'jpeg compressed' AND "camera" = 'sony playstation eyetoy'