 Complete the following phrase:  The Peace and Friendship Stadium SEF, originally a 17,000 capacity later reduced to 12,000 multi-purpose hall, opened in Piraeus, Athens in 1985. The arena was for the next ten years, the biggest indoor sports hall in Greece, and it hosted events such as the 1987 EuroBasket, the 1994 World Volleyball Championship, the 1995 European Volleyball Championship, the 