context: The World Cup, held every four years, was held in 1930. The 1942 and 1946 competitions were not held due to World War II. The competition is divided into two parts: the preliminary stage and the final stage. The qualifying stage will start three years earlier than the finals to identify 32 teams to advance to the finals. The final is now played in the host country's stadium with thirty-two teams competing for the championship. The World Cup finals are the most watched sports events in the world. An estimated 721 million people watched the 2006 FIFA World Cup final. [1]
question: When did the world cup first open?
answers.text: 1930