Original: It was the second WrestleMania to be held in Houston, with the first being WrestleMania X-Seven at the Reliant Astrodome, which was held in 2001.
Simplified: It was the second WrestleMania held in the state of Texas, with the first being WrestleMania X-Seven, at the Reliant Astrodome, also in Houston, which was held in 2001.