Question: Who win the beauty pageant in Las Vegas where Myriam Arévalos represented Paraguay ?

Context paragraphs:
Nuestra Belleza Paraguay 2014: The Nuestra Belleza Paraguay 2014 pageant was held at the "Yacht & Golf Club Paraguayo" on September 13th, 2014 to select Paraguayan representatives to the 4 major beauty pageants.  Guadalupe González, Miss Universe Paraguay 2013, Coral Ruiz, Miss World Paraguay 2013, Marta Raviolo, Miss International Paraguay 2013, and Leticia Cáceres, Miss Earth Paraguay 2013, crowned their successors: Sally Jara, Myriam Arévalos, Jéssica Servín and Sendy Cáceres, respectivelly.  It was broadcast live on .

Miss Universe 2015: Miss Universe 2015, the 64th Miss Universe pageant, was held on 20 December 2015 at The AXIS in Las Vegas, Nevada, United States.  Paulina Vega of Colombia crowned her successor Pia Wurtzbach of the Philippines at the end of the event.  80 contestants competed for the crown.

Miss Universo Paraguay 2010: The Miss Paraguay 2010 pageant was held on July 9, 2010.  The pageant was broadcast live on Telefuturo.  Yohana Benitez was crowned Miss Universo Paraguay and represented the country at the Miss Universe 2010.  Egni Eckert was chosen as Miss Mundo Paraguay and went to the Miss World 2010 pageant while María José Paredes represented Paraguay at the Miss International 2010 pageant after being chose as Miss Internacional Paraguay.

Nuestra Belleza Paraguay 2015: The Nuestra Belleza Paraguay 2015 pageant was held on September 21, 2015.  Sally Jara, Miss Universo Paraguay 2014, crowned her successor Laura Garcete at the end of the event; she was the Paraguayan candidate for the 2015 Miss Universe pageant.  Elected to represent Paraguay at Miss World 2015 was Giovanna Cordeiro, for Miss International 2015 was Mónica Mariani, and for Miss Earth 2015 was Myriam Arévalos.  The pageant was not broadcast live for the first time in a long time.

Gabriela Rejala: Gabriela Rejala is a beauty pageant contestant who represented Paraguay in Miss World 2008 in South Africa.  She also represented Paraguay in Reina Hispanoamericana 2008 in Santa Cruz, Bolivia, on October 30, 2008, and placed as second runner-up.  She was Top 16 semifinalist on Miss Earth 2009.

Lourdes Arévalos: Lourdes Verónica Arévalos Elias (born January 13, 1984, in San Lorenzo) is a Paraguayan model and beauty pageant titleholder who represented her country in Miss Universe 2006 held in Los Angeles, California, USA on July 23, 2006.  She won the title of "3rd Runner-up".  In the same year she represented Paraguay in the Reina Sudamericana 2006 beauty pageant and won the title of "2nd Runner-up".

Señorita México: Señorita México was the name of a national beauty pageant in Mexico, celebrated since 1952.  After 2005, the pageant changed its name to "Miss Mexico".  From 1952 to 1994, was the official pageant responsible for sending the country's representatives to the Miss Universe, Miss World, Miss International and other international pageants.  After the crowning of Lupita Jones, as the country's first Miss Universe, a dispute between Miss Jones and the pageant organizers over overdued prizes, led to a break of the longtime association between the pageant and the broadcast network Televisa.  When the pageant moved to another network TV Azteca, a competing pageant called "Nuestra Belleza México" was created, later directed by Miss Jones with the sponsorship of the Televisa TV Network.  in 1994 Señorita México lost the bid to Nuestra Belleza México to be the official pageant for the Miss Universe pageant.  Later Nuestra Belleza México also obtained the rights of sending Mexico's representatives to Miss World and Miss International.  However, the "Miss Mexico" pageant still sends representatives to other international pageants.  The trade name Señorita Mexico was trademarked in the United States, by Venezuelan Entrepreneur Adan S. Perez CEO of The Miss Mexico Organization with headquarters in Las Vegas Nevada who produces The Señorita Mexico U.S. beauty pageant.  He developed a franchise system in every state of The Union to bring girls from all over the United States to compete in national beauty event which takes place every year in Las Vegas.  Adan Perez has been producing the national competition Señorita Mexico U.S in Las Vegas, since the year of 2003.

María José Maldonado: María José Maldonado Gómez is a Paraguayan singer, model and beauty pageant titleholder who represented Paraguay at Miss Universe 2007 pageant.

Myriam Arévalos: Myriam Carolina Arévalos Villalba (born April 5, 1993) is a Paraguayan model and beauty pageant titleholder who after being crowned Miss Mundo Paraguay at the Nuestra Belleza Paraguay 2014 pageant represented her country at the Miss World 2014 pageant held in London.  She also represented Paraguay at Miss Universe 2015 held in Las Vegas.

Miss Paraguay 2009: The Miss Paraguay 2009 was held on July 10, 2009.  The pageant was won by Mareike Baumgarten of Asunción.  It was broadcast live on Telefuturo from the "Sheraton Asunción".  The winner represented Paraguay at the Miss Universe 2009 and Reina Hispanoamericana 2009.  The winner of Miss Mundo Paraguay, Tamara Sosa will compete in the Miss World 2009.  Romina Bogado was chosen as the Miss Internacional Paraguay and will go to the Miss International 2009 pageant.  Tamara Sosa also competed at the Miss American Continent Pageant.

Supporting paragraphs: Myriam Arévalos Miss Universe 2015
Answer: Pia Wurtzbach