Question: Radiant Shadows is an Urban fantasy novel, a subgenre of fantasy, by who?

full_context: Document 1: Newford: Newford is a fictional North American city, the setting in many of Charles de Lint's works of urban fantasy. De Lint generally avoids writing about cities that he has not been to; however, his hometown of Ottawa did not afford him the necessary freedoms for certain stories, and he began to set them in an "unnamed" big city. After several such stories, he named the city and expanded his development of it.
Document 2: Radiant (novel): Radiant is a science fiction novel by the Canadian author James Alan Gardner. It was published in 2004 by HarperCollins Publishers under their Eos Books imprint. It is the seventh novel in Gardner's "League of Peoples" series. Like the six preceding novels, "Radiant" is set in the middle of the 25th century; like most of them, it takes place in outer space and on alien planets, and features the continuing character Festina Ramos.
Document 3: Lord of Shadows: Lord of Shadows is a young adult urban fantasy novel by Cassandra Clare. It is the second book in "The Dark Artifices", which is chronologically fourth series in the The Shadowhunter Chronicles. The book follows the events that occur in the Los Angeles area in 2012, focusing on the residents of the Los Angeles Institute.
Document 4: Magic realism: Magical realism, magic realism, or marvelous realism is a genre of narrative fiction and, more broadly, art (literature, painting, film, theatre, etc.) that, while encompassing a range of subtly different concepts, expresses a primarily realistic view of the real world while also adding or revealing magical elements. It is sometimes called fabulism, in reference to the conventions of fables, myths, and allegory. "Magical realism", perhaps the most common term, often refers to fiction and literature in particular, with magic or the supernatural presented in an otherwise real-world or mundane setting.
Document 5: Mythic fiction: Mythic fiction is literature that is rooted in, inspired by, or that in some way draws from the tropes, themes and symbolism of myth, legend, folklore, and fairy tales. The term is widely credited to Charles de Lint and Terri Windling. Mythic fiction overlaps with urban fantasy and the terms are sometimes used interchangeably, but mythic fiction also includes contemporary works in non-urban settings. Mythic fiction refers to works of contemporary literature that often cross the divide between literary and fantasy fiction.
Document 6: Radiant Shadows: Radiant Shadows is an Urban fantasy novel by Melissa Marr. It is set in the same universe as Marr's previous YA novels, but is not a sequel to Fragile Eternity; rather, it is a companion novel like Ink Exchange was, focusing on a different set of characters.
Document 7: Utopian and dystopian fiction: The utopia and its derivative, the dystopia, are genres literature that explore social and political structures. Utopian fiction portrays a setting that agrees with the author's ethos, having various attributes of another reality intended to appeal to readers. Dystopian (or dystopic) fiction (sometimes combined with, but distinct from apocalyptic literature) is the opposite: the portrayal of a setting that completely disagrees with the author's ethos. Many novels combine both, often as a metaphor for the different directions humanity can take, depending on its choices, ending up with one of two possible futures. Both utopias and dystopias are commonly found in science fiction and other speculative fiction genres, and arguably are by definition a type of speculative fiction.
Document 8: Darkest Mercy: Darkest Mercy is an Urban fantasy novel by Melissa Marr. It is set in the same universe as Marr's previous YA novels, but is not a sequel to Radiant Shadows; rather, it is a companion novel like Ink Exchange was, focusing on a different set of characters.
Document 9: The Arrivals: The Arrivals is a 2013 Weird West novel by American author Melissa Marr. It is her second adult novel, following her 2011 novel "Graveminder". It was first published on July 2, 2013 through William Morrow and follows a group of people that must find a way to survive in strange new surroundings.
Document 10: Son of the Shadows: Son of the Shadows is an historical fantasy novel by Juliet Marillier and the second book in the Sevenwaters Trilogy first published in 2000. It follows the path of Sorcha and Red's third child, Liadan, a girl who lives outside the pattern of the 'Fair Folk', also known as Túatha Dé Danann. "Son of the Shadows" won the 2001 Aurealis Awards for Fantasy Novel.
Document 11: Fantasy world: A fantasy world is a fictional universe created in fiction media, such as literature, film or games. Typical fantasy worlds involve magic or magical abilities, nonexistent technology and sometimes, either a historical or futuristic theme. Some worlds may be a parallel world tenuously connected to Earth via magical portals or items; a fictional Earth set in the remote past or future; or an entirely independent world set in another universe.
Document 12: Contemporary fantasy: Contemporary fantasy, also known as modern fantasy or "indigenous fantasy", is a subgenre of fantasy, set in the present day or, more accurately, the time period of the maker. It is perhaps most popular for its subgenre, urban fantasy.
Document 13: The Borderland Series: Bordertown is a series of urban fantasy novels and stories created for teenage readers by Terri Windling. The series is set in Bordertown, a dystopian metropolis that lies along the border between "the Elflands" and "The World". The series consists of five anthologies and three novels to date. The series has spawned fan groups, gaming groups, costumed events (such as the Borderzone parties in Los Angeles), and was discussed in "The Fence and the River: Culture and Politics at the US-Mexico Border" by Claire F. Fox.
Document 14: Urban fantasy: Urban fantasy is a subgenre of fantasy in which the narrative has an urban setting. Works of urban fantasy are set primarily in the real world and contain aspects of fantasy, such as the arrival of alien races, the discovery of earthbound mythological creatures, coexistence or conflict between humans and paranormal beings, and other changes to city life. A contemporary setting is not strictly necessary for a work of urban fantasy: works of the genre may also take place in futuristic and historical settings, real or imagined.
Document 15: Melissa F. Olson: Melissa F. Olson is an American author, primarily in the urban fantasy genre. She is best known for her "Old World" books, which consist of the Scarlett Bernard trilogy, the Boundary Magic trilogy, several short stories, and a novella. Her latest work is the third Boundary Magic book, published June 21, 2016. She is also the author of "Nightshades", a Tor.com novella that is unrelated to her other urban fantasy books. In addition, Olson has published a P.I. mystery with no fantasy elements called "The Big Keep".
ground_truth: Melissa Marr