Question: Fereshta Samah is the younger sister of a singer whose real name is what?

Context paragraphs:
Kier Legaspi: Christopher "Kier" Lim Legaspi (born January 1, 1973) is a Filipino actor known for his villain roles in the 90s.  He is the younger brother of fellow actors Zoren Legaspi and Brando Legaspi (whose real name is "Kier Lim Legaspi", a name he borrowed and used on-screen) and is also a son of Lito Legaspi.  He has one daughter with actress Marjorie Barretto named Daniella.

Hangama: Hangama (Persian: هنگامه) is a popular singer from Afghanistan.  When she became a singer her mother chose the name Hangama for her and her real name is Zuhra.  She currently lives an exile in Toronto, Canada where she continues her music career.  Before her emigration from Afghanistan in the early 1980s, she was counted as one of the most popular female singers of the country.  Besides Afghanistan, she is also known in Tajikistan and Iran where she has a fan base

Schorsch Kamerun: Schorsch Kamerun, (*1963, Timmendorfer Strand) whose real name is Thomas Sehl, is a German musician, singer, author, theatre director, and club proprietor.  His stage name is a parody of the name of the singer of American punk band Dead Kennedys, called Jello Biafra.

Winradio: WiNRADiO is the name of a manufacturer of radio communication equipment as well as a brand name applied to computer-based radio receivers, software, antennas and accessories.  WiNRADiO is based in Melbourne, Australia.  The name WiNRADiO is in fact just a brand name, or trading name, of the company, whose real name is Radixon Group.  This trading name was adopted as a result of market success of the company's first product, the "WinRadio Card".  This was an ISA bus card which transformed a Windows-based computer into a wide-coverage communications receiver, making it possible to receive point-to-point communications (ham radio, utilities, police, space research, etc.) on an ordinary PC.

Revs (graffiti artist): Revs is the tag name of a New York City graffiti artist whose wheat paste stickers, roller pieces, murals, sculptures, and spray-painted diary entries have earned him over the course of two decades the reputation of an artist provocateur.  Revs, whose real name is unknown, is perhaps most widely known for his collaborating in the 90's with another graffiti writer, Adam Cost, of Queens.

Nayah: Nayah, whose real name is Sylvie Mestre, is a French singer.

Tube domain: In mathematics, a tube domain is a generalization of the notion of a vertical strip (or half-plane) in the complex plane to several complex variables.  A strip can be thought of as the collection of complex numbers whose real part lie in a given subset of the real line and whose imaginary part is unconstrained; likewise, a tube is the set of complex vectors whose real part is in some given collection of real vectors, and whose imaginary part is unconstrained.

Fereshta Samah: Fereshta Samah (Pashto: فرشته سما ) is an Afghan-Demographics of Afghanistan singer from Afghanistan.  She is currently a resident of Germany, having spent most of her childhood there.  She is the younger sister of Hangama, another popular Afghan singer.  In 2006, she made a trip to Afghanistan for concerts in Kabul.

Louis-Henri Mercier: Louis-Henri Mercier, whose real name was "Henri Goegg", was a stamp forger operating from Geneva, Switzerland, whose business formed the foundation for the much more successful forger François Fournier.

Rayo de Jalisco Jr.: Rayo de Jalisco Jr. (Spanish for "Lightning Bolt from Jalisco Jr."; born January 1, 1960) is the ring name of a Mexican Luchador Enmascarado (masked professional wrestler) whose real name has not been revealed, per Lucha Libre traditions.  Rayo de Jalisco Jr. is the son of Rayo de Jalisco a famous wrestler from the early days of Lucha Libre; he also has a son who wrestles under the name Rayman.  Rayo Jr. is a former two time CMLL World Heavyweight Champion and the reigning WWA World Heavyweight Champion, a title he has held since March 21, 2003.  Rayo de Jalisco Jr.'s real name is not a matter of public record, as is often the case with masked wrestlers in Mexico where their private lives are kept a secret from the wrestling fans.

Supporting paragraphs: Fereshta Samah Hangama
Answer: Zuhra