premise: The 2011 Sudirman Cup was the twelfth tournament of the Sudirman Cup. It was held from May 22–29, 2011 in Qingdao, China. According to the Badminton World Federation (BWF) 32 teams have confirmed their participation, for the first time twelve teams competed in the elite group to battle for the title.
hypothesis: The tournament was postponed due to a terror threat
reason: There is no information to confirm or deny the statement