 Complete the following phrase:  Bærum SKs club room, raised in 1984, is located in an adjacent building which is shared with the athletics and orienteering club IL Tyrving. Bærum SK also has an indoor football arena, Bærumshallen, which is used for exhibitions and sales in addition to sports. The 1947 Norwegian Athletics Championships were held at Bislett Stadion in Oslo, although the decathlon event was organized by Tyrving at Kadettangen. The site of the indoor arena was used for 