Task: Question Answering
Input (English): Context: 1983 Bok, provisional designation 1975 LB, is an asteroid from the middle region of the asteroid belt, discovered by American astronomer Elizabeth Roemer at the U.S. Steward Observatory of the University of Arizona, Tucson, on 9 June 1975. 
 Question: When was 1983 Bok discovered or created?
Output (English): 9 june 1975