Question: In which century did American author Nora Roberts and French poet Jean Venturini write most of their work?
Context: Jean Venturini is a French poet and a sailor who was born in Nabeul, Tunisia, on 17 September 1919 and died in a submarine crash, in the Mediterranean Sea (he was only 20 years old), on 17 June 1940. Carolina Moon is a 2007 American television film directed by Stephen Tolkin and starring Claire Forlani and Oliver Hudson.  Based on the Nora Roberts novel "Carolina Moon", the film is about a woman with psychic visions who returns to her hometown to exorcise her demons and finds both danger and love.  "Carolina Moon" is part of the Nora Roberts 2007 movie collection, which also includes "Angels Fall", "Blue Smoke", and "Montana Sky".  The movie debuted February 19, 2007 on Lifetime Television. Roarke is a fictional character from the series "In Death".  He is the husband of Lt. Eve Dallas and together, they are the main characters of the futuristic (circa 2058 AD) romance-mystery series by J.D. Robb, pseudonym for NY Times best-selling author Nora Roberts.  A former career criminal, Roarke is the owner and CEO of Roarke Industries, an inter-planetary corporation that has made him one of the richest men in the world. Irish Thoroughbred is American author Nora Roberts's debut novel, originally published by Silhouette in January 1981 as a category romance.  Like other category romances, the novel was less than 200 pages and was intended to be on sale for only one month.  It proved so popular that it was repackaged as a stand-alone romance and reprinted multiple times.  Roberts wrote two sequels, "Irish Rebel" and "Irish Rose". Blue Smoke is a 2007 American mystery thriller romantic drama television film directed by David Carson and starring Alicia Witt, Matthew Settle, and Scott Bakula.  Written by Ronni Kern, based on the Nora Roberts novel of the same name, the film is about a beautiful arson investigator whose boyfriends are murdered in fires set by a stalker who traumatized her years earlier.  "Blue Smoke" is part of the Nora Roberts 2007 movie collection, which also includes "Angels Fall", "Carolina Moon", and "Montana Sky".  The film debuted February 12, 2007 on Lifetime Television. Eve Dallas is the main character of the "In Death" novels, a futuristic (circa 2058 AD) romance-mystery series by J.D. Robb, pseudonym for author Nora Roberts. Carolina Moon is a 2000 romantic suspense novel by American author Nora Roberts.  It is a standalone novel featuring Tory Bodeen as the herione and Kincade Lavelle as her love interest.  It was made into a TV movie for the Lifetime network in 2007. Montana Sky is a 2007 American television film directed by Mike Robe and starring Ashley Williams, John Corbett, and Charlotte Ross.  Based on the Nora Roberts novel of the same name, the film is about a wealthy stock dealer who bequeaths his Montana farm to his three daughters, provided they live on the ranch together for at least one year.  "Montana Sky" is part of the Nora Roberts 2007 movie collection, which also includes "Angels Fall", "Blue Smoke", and "Carolina Moon".  The movie debuted on February 5, 2007 on Lifetime. The list of works by Nora Roberts includes all of the novels and novellas published by author Nora Roberts.  The list is in order by year, and within each year it is in alphabetical order.  It includes books published under the names Nora Roberts, J.D. Robb, and Jill March.  The complete listing of J.D. Robb novels, in series order, can also be found at In Death. Nora Roberts (born Eleanor Marie Robertson on October 10, 1950) is an American bestselling author of more than 213 romance novels.  She writes as J. D. Robb for the "in Death" series, and has also written under the pseudonyms Jill March and for publications in the U.K. as Sarah Hardesty.
Answer: 20