Task: Question Generation
Input (English): Context : The Chelyabinsk meteor was a superbolide caused by a near-Earth asteroid that entered Earth's atmosphere over Russia on 15 February 2013 at about 09:20 YEKT (03:20 UTC), with a speed of 19.16 ± 0.15 kilometres per second (60,000--69,000 km/h or 40,000--42,900 mph). 
Answer : 15 February 2013
Output (English): What is the full date that Chelyabinsk meteor crashed on?