Given the following reasoning and answer, what was the question? To answer the above question, the relevant sentence is: The 2018 Big 12 Conference Baseball Tournament will be held from May 23 through May 27 at Chickasaw Bricktown Ballpark in Oklahoma City, Oklahoma.
 The answer: Chickasaw Bricktown Ballpark in Oklahoma City , Oklahoma
The question Passage: The 2018 Big 12 Conference Baseball Tournament will be held from May 23 through May 27 at Chickasaw Bricktown Ballpark in Oklahoma City, Oklahoma. The annual tournament determines the conference champion of the Division I Big 12 Conference for college baseball. The winner of the tournament will earn the league's automatic bid to the 2018 NCAA Division I Baseball Tournament.

Question: Based on this passage, where is the big 12 baseball tournament held?