Complex sentence: This was the sixth consecutive Triplemanía to be held at the arena, also the event was the 25th year in a row that AAA had held a "Triplemanía" show, and the 31st show held under the "Triplemanía" banner since 1993.
Split into simpler sentences: This was the sixth consecutive Triplemanía to be held at the arena. Also, the event was the 25th year in a row that AAA had held a "Triplemanía" show, and the 31st show held under the "Triplemanía" banner since 1993.