premise: Shenzhen Airlines () is an airline headquartered in Shenzhen Bao'an International Airport in Bao'an District, Shenzhen, Guangdong, China. It has been a member of Star Alliance since 2012, and is currently one of two Chinese airlines that is part of the global airline network.
hypothesis: Shenzhen Airlines joined the Star Alliance in 2012 A.D.
reason: The airline did join the Star Alliance that year - writing "AD" after the year does not make the date wrong, it just confused the AI.