Question: Which fiction author also writes biographies, Jodi Picoult or Kate Grenville?

full_context: Document 1: Between the Lines (book): Co-written alongside her daughter Samantha Van Leer, Between the Lines is Jodi Picoult's first ever young adult book released in 2012. Picoult has since written a companion/sequel to "Between the Lines", released in 2015, called "Off the Page" which continues the story of main characters bookworm Delilah, her punk-rocker best friend Jules and Delilah's fictional come-to-life prince Oliver.
Document 2: Kate Howarth (writer): Kate Howarth (born 1950, Sydney) is an Aboriginal Australian writer whose memoir "Ten Hail Marys" was published by the University of Queensland Press in 2010. The sequel, Settling Day, was published in 2015.
Document 3: Alice Sebold: Alice Sebold (born September 6, 1963) is an American writer. She has published three books: "Lucky" (1999), "The Lovely Bones" (2002), and "The Almost Moon" (2007).
Document 4: Mollie Gillen: Mollie Gillen (née Woolnough; 1908–2009) was an Australian historian, researcher, writer and novelist. Her work on the First Fleet, in "The search for John Small," "First Fleeter" and The Founders of Australia: A Biographical Dictionary of the First Fleet, explored the idea that many of the founding families of Australia were descended from the convict population, rather than those sent to guard them. Gillen's article Maud Montgomery: The Girl Who Wrote Green Gables instigated a new era in scholarship on Lucy Maud Montgomery.
Document 5: Jodi Picoult: Jodi Lynn Picoult ( ; born May 19, 1966) is an American writer. She was awarded the New England Bookseller Award for fiction in 2003. Currently approximately 14 million copies of her books are in print worldwide, translated into 34 languages.
Document 6: True History of the Kelly Gang: True History of the Kelly Gang is a historical novel by Australian writer Peter Carey. It was first published in Brisbane by the University of Queensland Press in 2000. It won the 2001 Booker Prize and the Commonwealth Writers Prize in the same year. Despite its title, the book is fiction and a variation on the Ned Kelly story.
Document 7: Cate Kennedy: Cate Kennedy is an Australian author based in Victoria. She graduated from University of Canberra and has also taught at several colleges, including The University of Melbourne. She is the author of the highly acclaimed novel "The World Beneath", which won the People’s Choice Award in the NSW Premier’s Literary Awards in 2010. It was also shortlisted for "The Age" fiction prize 2010 and the ASA Barbara Jefferis Award 2010, among others. She is an award-winning short-story writer whose work has twice won The Age Short Story Competition and has appeared in a range of publications, including "The New Yorker". Her collection, "Dark Roots", was shortlisted for the Steele Rudd Award in the Queensland Premier’s Literary Awards and for the Australian Literature Society Gold Medal. Cate is also the author of the travel memoir "Sing, and Don’t Cry", and the poetry collections "Joyflight" and "Signs of Other Fires". Her latest book is "The Taste of River Water: New and Selected Poems by Cate Kennedy", which was published in May 2011 and won the Victorian Premier’s Literary Awards CJ Dennis Prize for Poetry.
Document 8: Anne Gracie: Anne Gracie is an award winning Australian author of historical romance novels. Her books have been shortlisted for RITA Award and she has twice won the Australian Romance Writer of the Year award and National Readers Choice Award (USA). She lives in Melbourne, Victoria.
Document 9: The Storyteller (Picoult novel): The Storyteller is the twentieth novel written by the author Jodi Picoult.
Document 10: Germaine Greer: Germaine Greer ( ; born 29 January 1939) is an Australian-born writer and public intellectual. She is regarded as one of the major voices of the second-wave feminist movement in the latter half of the 20th century. She lives in the United Kingdom, where she has held academic positions, specializing in English literature, at the University of Warwick and Newnham College, Cambridge.
Document 11: List of prolific writers: Some writers have had prolific careers with hundreds of their works being published. While some best-selling authors have written a small number of books that have sold millions of copies, others have had lengthy careers and maintained a high level of output year after year. Dame Agatha Christie, the most-published novelist in history, is estimated to have sold 4 billion books, having written 69 novels and 19 plays. Her works were published between 1920 and 1976, equating to around three publications every two years. Dame Barbara Cartland has also sold millions of copies of her books but wrote many more than Christie. She spent 80 years as a novelist with 722 books published, averaging one book released every 40 days of her career. While Cartland wrote a significant number of full-length novels, other authors have been published many more times but have specialised in short stories. Spanish author Corín Tellado wrote over 5,000 novellas, selling 400 million copies of her books.
Document 12: Kate Grenville: Kate Grenville (born 14 October 1950) is an Australian author. She has published fifteen books, including fiction, non-fiction, biography, books about the writing process.
Document 13: The Secret River: The Secret River, written by Kate Grenville in 2005, is a historical novel about an early 19th-century Englishman transported to Australia for theft. The story explores what might have happened when Europeans colonised land already inhabited by Aboriginal people. The book has been compared to Thomas Keneally's "The Chant of Jimmie Blacksmith" and to Peter Carey's "True History of the Kelly Gang" for its style and historical theme.
Document 14: Eowyn Ivey: Eowyn Ivey is a Pulitzer Prize finalist author. Educated at Western Washington University, Ivey was a finalist for the Pulitzer Prize for Fiction in 2013 for her debut novel "The Snow Child".
Document 15: Janet Dailey: Janet Anne Haradon Dailey (May 21, 1944 – December 14, 2013) was an American author of numerous romance novels as Janet Dailey (her married name). Her novels have been translated into nineteen languages and have sold more than 300 million copies worldwide. Dailey was both an author and entrepreneur.
ground_truth: Kate Grenville