title: Hakone Ekiden
context: In the meantime, the first ekiden, Tokaido ekidentohokyoso(東海道駅伝徒歩競走) was held in 1917 between Sanjō Ōhashi, Kyoto and Ueno Shinobazunoike(上野不忍池) Tokyo, celebrating 50 years after Tokyo became the capital. This race was a big relay race between Kyoto and Tokyo (516km) held by Yomiuri Shimbun for three days. It succeeded and became the original form of Hakone Ekiden. Kanaguri was influenced by the success of the race and persuaded many universities that they should race in the Hakone Ekiden.  As a result, Waseda Univ., Keio Univ., Meiji Univ. and Tokyo Kōshi replied to his offer and Hakone Ekiden started. Hakone Ekiden was started with great energy of the pioneers in Japanese sports society. It started during World War I, so industrial areas gradually expanded to the west and the Tokaido road was widened.  Reflecting this active atmosphere, the Japanese sports society, including ekiden one, were developing great challenging spirits at that time.
question: When did Ekiden start?
answers: 1917