<prompt> Translate the following text to SwahiliHeld every December, this is one of the largest and richest rodeo events in the country, featuring 10 days of the nations top cowboys and cowgirls riding bulls, busting broncos, and roping calves at the Thomas and Mack Ceter.  <response>: Katika mwaka huu wa mwaka, Rodeo inafanyika katika eneo la Kalifornia, na inaonyesha mashindano ya mbwa wa punda na ngombe wa punda, na mashindano ya ngombe na ngombe wa punda katika eneo la Thomas na Mack. 