inputs: hypothesis: 69 people were injured during an emergency landing at Vnukovo Airport in Moscow. premise: A Boeing 737 with 69 people on board safely made an emergency landing at Vnukovo Airport in Moscow, Russia, on Saturday, after the crew noticed excessive vibrations in the aircraft's left engine shortly upon takeoff. There were no reports of injuries or damage. The airplane circled around the airport to burn spare fuel in order to make the landing safer, according to Interfax. Fire crews and ambulances were at the scene when the jet landed. "After the plane took off, a vibration of the left engine was detected, after which it was decided to return back to Vnukovo," (Translated from Russian) a spokesperson for the airport told Interfax. "The airplane made an emergency landing. None of the 69 people on board were hurt." The plane had taken off from Vnukovo and was en route to Sochi on the Black Sea.