Complex sentence: The 2007 Phillips 66 Big 12 Men's Basketball Championship, was the 2007 edition of the Big 12 Conference's championship tournament held at the Ford Center in Oklahoma City from 8 March until 11 March 2007.
Split into simpler sentences: The 2007 Phillips 66 Big 12 Men's Basketball Championship, was the 2007 edition of the Big 12 Conference's championship tournament. The tournament was held at the Ford Center in Oklahoma City from 8 March until 11 March 2007.