<prompt> Kǝla fǝrǝnga adǝbe fuwunzǝ - Ronald Câmara shima kam jiri 1972 -a 1986 -a bewo.  <response>: Chess Olympiads, kuru shiye kura arbitre World Junior Chess Championshipbe suro saa 1978 lan. Shiye Vice President Brazilian Chess Confederationbe 1970-1976 kuru President FIDE South American Zonebe 1974-1978 ro wallono. 