Question: Who was born first, Piet Norval or Raúl Ramírez?
Context: El Bajío is a group of ten restaurants in Mexico City which are run by Carmen Ramírez Degollado, noted for their colorful decoration and traditional cuisine from central Mexico which has received awards and praise from notable food experts.  The restaurant business began in 1972 when Carmen’s husband Raúl Ramírez Degollado bought a restaurant selling carnitas in the northwestern borough of Azcapotzalco.  Four years later, Raúl died and Carmen took over the business, expanding the menu and adding waiters.  The restaurant was so successful that she was able to send her five children to private university.  In 2006, El Bajío opened a second location in the center of the city and since then has grown to ten locations which serve about 120,000 diners a month.  Carmen has become a notable chef in her own right, giving classes and demonstrations in Mexico and abroad as well as writing about 20 books. David Adams and Marius Barnard were the defending champions but they competed with different partners that year, Adams with Olivier Delaître and Barnard with Piet Norval. Lucas Arnold and Tomás Carbonell were the defending champions, but did not participate together this year.  Arnold partnered Martín García, losing in the first round.  Carbonell partnered Piet Norval, losing in the first round. Tomás Carbonell and Donald Johnson were the defending champions, but did not participate together this year.  Carbonell partnered Juan Balcells, losing in the first round.  Johnson partnered Piet Norval and successfully defended his title. Raúl Ramírez (born 20 June 1953) is a retired Mexican professional tennis player.  He was active during the 1970s and 1980s, and is regarded as one of the great all-around players of the modern era.  Ramírez was also the first player to finish first in both singles and doubles Grand Prix point standings, accomplishing the feat in 1976.  He attended and played tennis at the University of Southern California in Los Angeles. Penthouse, is a Mexican telenovela directed by Raúl Araiza Sr for Televisa in 1973.  Starring Fanny Cano and Raúl Ramírez. Pieter ("Piet") Norval (born 7 April 1970) is a former tennis player from South Africa, who turned professional in 1988.  The right-hander represented his native country in the doubles competition at the 1992 Summer Olympics in Barcelona, where he partnered Wayne Ferreira.  The pair won the silver medal, after losing the final to Boris Becker and Michael Stich from Germany.  Norval reached his highest singles ATP-ranking on 19 June 1989, when he became the no. 125 of the world. Bent-Ove Pedersen (born 11 July 1967 in Oslo) is a former tennis player from Norway, who turned professional in 1992.  He spent several years playing tennis at Berkeley in California.  The right-hander represented his native country in the doubles competition at the 1992 Summer Olympics in Barcelona, where he partnered Christian Ruud.  The pair was defeated in the first round by South Africa's eventual runners-up Wayne Ferreira and Piet Norval.  Pedersen reached his highest singles ATP-ranking on 13 September 1993, when he became the number 366 of the world.  He was in quarterfinal in US Open doubles, 1991, partnering Matt Lucena from the US.  He became the number 78 on the doubles ranking 30.  August 1993. Piet Norval and Kevin Ullyett were the defending champions, but did not participate this year. Donald James "Don" Johnson (born September 9, 1968) is a former professional tennis player from the United States who reached the World No. 1 doubles ranking in 2002.  Although born in Bethlehem, Pennsylvania, he was raised and learned the sport of tennis in the Pittsburgh suburb of Mt. Lebanon, Pennsylvania.  Johnson attended Fairview High School in Erie, Pennsylvania, and won the PIAA State Singles Championship in 1984.  During his career, he won the Wimbledon men's doubles title in 2001 (partnering Jared Palmer), and the Wimbledon mixed doubles title in 2000 (partnering Kimberly Po).  He also won the doubles title at the Tennis Masters Cup in 2000 (partnering Piet Norval).  He won a total of 23 top-level doubles titles.
Answer: Raúl Ramírez