title: Wrestle Kingdom 9
context: Wrestle Kingdom 9 in Tokyo Dome was a professional wrestling pay-per-view (PPV) event produced by the New Japan Pro Wrestling (NJPW) promotion, which took place at the Tokyo Dome in Tokyo, Japan on January4, 2015. It was the 24th January 4 Tokyo Dome Show and the first event on the 2015 NJPW schedule. The event featured ten professional wrestling matches and one pre-show match, six of which were for championships.
question: When was Wrestle Kingdom 9?
answers: anuary4, 2015