Question: Who is the artist that sings both "Fading" and "Take a Bow"?

Context paragraphs:
Take Ya Home: "Take Ya Home" is the second and final single from Lil' Bow Wow's second album "Doggy Bag" (2001).  The song also serves as the theme song to the 2002 family film "Like Mike", which was Bow Wow's first starring role in a motion picture.  It samples "Have a Nice Day" by Roxanne Shanté.

Ephemeral plant: An ephemeral plant is one marked by short life cycles.  The word ephemeral means transitory or quickly fading.  In regard to plants, it refers to several distinct growth strategies.  The first, spring ephemeral, refers to perennial plants that emerge quickly in the spring and die back to their underground parts after a short growth and reproduction phase.  Desert ephemerals are plants which are adapted to take advantage of the short wet periods in arid climates. Mud-flat annuals take advantage of short periods of low water.  In areas subjected to recurring human disturbance, such as plowing, weedy ephemerals are very short lived plants whose entire life cycle takes less than a growing season.  In each case, the species has a life cycle timed to exploit a short period when resources are freely available.

Like Mike (soundtrack): Like Mike: Music From the Motion Picture is the soundtrack to the 2002 film, "Like Mike".  It was released on July 2, 2002 through So So Def Recordings and consisted of hip hop and contemporary R&B with production from the likes of Jermaine Dupri, The Neptunes and even Alicia Keys.  The soundtrack spawned two singles, the first being "Basketball", a cover of Kurtis Blow's 1984 song, performed by Lil' Bow Wow featuring Jermaine Dupri, Fabolous & Fundisha.  The other is "Take Ya Home" by Lil' Bow Wow, taken from his second album "Doggy Bag", which serves as the theme song for the film.

Take a Bow (Madonna song): "Take a Bow" is a song by American singer Madonna from her sixth studio album "Bedtime Stories" (1994).  It was released as the album's second single on November 29, 1994, by Maverick Records.  It is a midtempo pop ballad written and produced by Madonna and Babyface.  The song also appears on her compilation albums "Something to Remember" (1995), "GHV2" (2001) and "Celebration" (2009).  Following the sexually explicit persona portrayed by Madonna on her previous album, "Erotica", the singer wanted to tone down her image for "Bedtime Stories".  She started collaborating with Babyface, whose work with other musicians had impressed her.  "Take a Bow" was developed from this collaboration, after Madonna listened to the beat and the chords of the demo structure of the song.

Northern subject rule: The Northern Subject Rule is a grammatical pattern that occurs in Northern English and Scots dialects.  Present-tense verbs may take the verbal ‑"s" suffix, except when they are directly adjacent to one of the personal pronouns "I", "you", "we", or "they" as their subject.  As a result, "they sing" contrasts with "the birds sings"; "they sing and dances"; "it's you that sings"; "I only sings".

Bow tie (biology): In the biological sciences, the term bow tie (so called for its shape) is a recent concept that tries to grasp the essence of some operational and functional structures observed in biological organisms and other kinds of complex and self-organizing systems.  In general, bow tie architectures refer to ordered and recurrent structures that often underlie complex technological or biological systems, and that are capable of conferring them a balance among efficiency, robustness and evolvability.  In other words, bow ties are able to take into account a great diversity of inputs (fanning in to the knot), showing a much smaller diversity in the protocols and processes (the "knot") able to elaborate these inputs, and finally an extremely heterogeneous diversity of outputs (fanning out of the bowtie).  These architectures thus manage a wide range of inputs through a "core" (knot) constituted by a limited number of elements.  In such structures, inputs are conveyed into a sort of funnel, towards a "synthesis" core, where they can be duly organized, processed and managed by means of protocols , and from where, in turn, a variety of outputs, or responses, is propagated.

Doggy Bag: Doggy Bag is the second studio album by American rapper Lil' Bow Wow.  It was released on December 18, 2001, by So So Def Recordings and Columbia Records which produced by Jermaine Dupri.  Two singles released: The first single "Thank You", which samples The Cars' song "I'm Not the One", and "Take Ya Home" was released as the second single.  The song was also featured on the soundtrack to Lil' Bow Wow's film, "Like Mike".

Take a Bow (Rihanna song): "Take a Bow" is a song recorded by Barbadian singer Rihanna for "" (2008), the re-release of her third studio album "Good Girl Gone Bad" (2007).  The song was written and produced by Tor Erik Hermansen, Mikkel Eriksen, and Shaffer Smith under their stage names StarGate and Ne-Yo.  "Take a Bow" was released as the first single from the re-release and the fifth single overall from the two releases.  It is an R&B song that contains elements of dance-pop.  Critical reception of "Take a Bow" was mixed, with some critics praising the song's lyrics and powerful balladry, while others criticized StarGate's production as unoriginal.

Pygmy music: Pygmy music includes the Sub-Saharan African music traditions of a broad group of people who live in Central Africa, especially in the Congo, the Central African Republic and Cameroon.  Pygmy groups include the Baka, the Aka, the Twa peoples and the Efé.  Music is an important part of Pygmy life, and casual performances take place during many of the day's events.  Music comes in many forms, including the spiritual likanos stories, vocable singing and music played from a variety of instruments including the bow harp ("ieta"), "ngombi" (harp zither) and "limbindi" (a string bow).

Fading (song): "Fading" is a song by Barbadian recording artist Rihanna from her fifth studio album, "Loud" (2010).  The song was written by Jamal Jones and Ester Dean, whilst production of the song was completed by Jones under his production name, Polow da Don.  Musically, the song samples Irish instrumentalist and singer-songwriter Enya' s "One by One", whilst lyrically, the song is about leaving a man in a relationship.  After "Loud" had strong digital download sales in the United Kingdom, "Fading" charted at number 187 on that country's singles chart in November 2010.  The song received generally positive reviews from music critics, who praised da Don's production, but one critic criticized Rihanna for copying herself and failing to create something different.  Some critics also compared it to one of Rihanna's previous singles, "Take A Bow".  The song has also been performed on select dates of the Loud Tour (2011).

Supporting paragraphs: Fading (song) Take a Bow (Rihanna song)
Answer: Rihanna