Question: The 1951 Belgian Grand Prix was a Formula One motor race held on 17 June 1951 at Circuit de Spa-Francorchamps ,it's the highest class of single-seat auto racing, that is sanctioned by which organization with the acronym of FIA?
Sentence (from "Formula One"): The FIA Formula One World Championship has been the premier form of racing since the inaugural season in 1950, although other Formula One races were regularly held until 1983.
Relevant evidence: No