Question: Liz Michelle de León Paz, is a Panamanian beauty pageant contestant winner of the Señorita Panamá 1990 title, and also represented Panama in which 40th Miss Universe pageant, was held on May 17, 1991 at the Aladdin Theatre for the Performing Arts in Las Vegas, Nevada, USA?
Sentence (from "Miss Universe 1991"): Seventy-three contestants competed in the 1991 Miss Universe pageant.
Relevant evidence: No