Table:
Year | Location | Gold | Silver | Bronze
1950 | Basel | Helena Rakoczy | Tereza Kočiš | Stefania Reindlova
1954 | Rome | Tamara Manina | Eva Bosáková | Maria Gorokovskaya
1958 | Moscow | Eva Bosáková | Larisa Latynina | Keiko Tanaka
1962 | Prague | Larisa Latynina | Irina Pervuschina | Věra Čáslavská
1966 | Dortmund | Natalia Kutchinskaya | Věra Čáslavská | Zinaida Drougina
1970 | Ljubljana | Ludmila Turicheva | Olga Karaseva | Zinaida Voronina
1974 | Varna | Ludmila Turicheva | Olga Korbut | Elvira Saadi /  Rusudan Siharulidze
1978 | Strasbourg | Nellie Kim /  Elena Mukhina | - | Emilia Eberle /  Kathy Johnson
1979 | Fort Worth | Emilia Eberle | Nellie Kim | Melita Ruhn
1981 | Moscow | Natalia Ilienko | Yelena Davydova | Zoja Grantcharova
1983 | Budapest | Ekaterina Szabo | Olga Mostepanova | Boriana Stoyanova
1985 | Montreal | Oksana Omelianchik | Elena Shushunova | Ulrike Klotz
1987 | Rotterdam | Daniela Silivaş /  Elena Shushunova | - | Aurelia Dobre
1989 | Stuttgart | Daniela Silivaş /  Svetlana Boguinskaya | - | Cristina Bontaş
1991 | Indianapolis | Cristina Bontaş /  Oksana Chusovitina | - | Kim Zmeskal
1992 | Paris | Kim Zmeskal | Henrietta Ónodi | Maria Neculiţă /  Tatiana Lysenko
1993 | Birmingham | Shannon Miller | Gina Gogean | Natalia Bobrova
1994 | Brisbane | Dina Kochetkova | Lavinia Miloşovici | Gina Gogean
1995 | Sabae | Gina Gogean | Ji Liya | Ludivine Furnon
1996 | San Juan | Kui Yuan-Yuan /  Gina Gogean | - | Liubov Sheremeta /  Lavinia Miloşovici
1997 | Lausanne | Gina Gogean | Svetlana Khorkina | Elena Produnova
1999 | Tianjin | Andreea Răducan | Simona Amânar | Svetlana Khorkina
2001 | Ghent | Andreea Răducan | Daniele Hypólito | Svetlana Khorkina
2002 | Debrecen | Elena Gómez | Verona van de Leur | Samantha Sheehan
2003 | Anaheim | Daiane Dos Santos | Cătălina Ponor | Elena Gómez
2005 | Melbourne | Alicia Sacramone | Anastasia Liukin | Suzanne Harmes
2006 | Aarhus | Cheng Fei | Jana Bieger | Vanessa Ferrari
2007 | Stuttgart | Shawn Johnson | Alicia Sacramone | Cassy Vericel
2009 | London | Elizabeth Tweddle | Lauren Mitchell | Sui Lu
2010 | Rotterdam | Lauren Mitchell | Aliya Mustafina /  Diana Chelaru | -
2011 | Tokyo | Ksenia Afanasyeva | Sui Lu | Aly Raisman
2013 | Antwerp | Simone Biles | Vanessa Ferrari | Larisa Iordache
2014 | Nanning |  |  | 
2015 | Glasgow |  |  |

Question: how many times was the location in the united states?
Answer: 3

Question: what is the number of times a brazilian has won a medal?
Answer: 2

Question: what is the total number of russian gymnasts that have won silver.
Answer: 8

Question: where were the championships held before the 1962 prague championships?
Answer: Moscow

Question: how many times was the world artistic gymnastics championships held in the united states?
Answer: 3

Question: which two american rivals won consecutive floor exercise gold medals at the artistic gymnastics world championships in 1992 and 1993?
Answer: Kim Zmeskal|Shannon Miller

Question: as of 2013, what is the total number of floor exercise gold medals won by american women at the world championships?
Answer: 5

Question: how long is the time between the times the championship was held in moscow?
Answer: 23 years

Question: how many consecutive floor exercise gold medals did romanian star andreea raducan win at the world championships?
Answer: 2

Question: where did the world artistic gymnastics take place before san juan?
Answer: Sabae