premise: The 2017 City of Onkaparinga ATP Challenger was a professional tennis tournament played on hard courts. It was the third edition of the tournament and part of the 2017 ATP Challenger Tour. It took place in Happy Valley, Australia from 2 to 8 January 2017.
hypothesis: In 2017 a professional tennis tournament was played on soft courts.
reason: A pro tournament on soft courts may have been played somewhere in the world in 2017.