How many participants did the person who shot Adrian Pracon kill at a summer camp?
Adrian Pracon: Adrian Pracon (born December 8, 1989) is a youth politician from Norway who was the last person to be shot by Anders Behring Breivik during the 2011 Norway attacks in Utøya, an attack which he survived. Anders Behring Breivik:  On 22 July 2011 he killed eight people by detonating a van bomb amid Regjeringskvartalet in Oslo, then shot dead 69 participants of a Workers' Youth League (AUF) summer camp on the island of Utøya.
i don't know