Question:  Comic Relief USA was a non-profit charity organization hosted in part by a stand-up comedian who rose to fame in what television series?

<P0-S0> Comic Relief Does The Apprentice is a special celebrity version of British reality television series "The Apprentice", produced to raise money for Comic Relief. <P0-S1>  The first edition aired in March 2007, and the second in March 2009. <P0-S2>  Five male celebrities and five female celebrities took part in the show to complete a designated task. <P0-S3>  The task in the 2007 edition was to run a funfair. <P0-S4>  The show first aired on BBC One at 2100 GMT on 15 March 2007 and concluded on 16 March 2007 during the main Comic Relief programme. <P0-S5>  The first episode of the show received strong viewing figures of 6.72 million. <P0-S6>  It became the fifth most watched programme on BBC One that week. <P0-S7>  The show returned on 12 March 2009 for the Comic Relief 2009 event, where the woman's team triumphed. <P0-S8>  This would prove to be the final charity "Apprentice" series, in part because of the time needed each year to film the newly commissioned "Junior Apprentice" series. <SEP> <P1-S0> Comic Relief USA, previously known as America Gives Back Inc., is an operating 501(c)(3) American charity. <P1-S1>  It is an independent sister organization to the UK charity Comic Relief and is not connected to the former American charity Comic Relief USA. <P1-S2>  Comic Relief USA. <P1-S3>  is notable for the 2015 US launch of Red Nose Day, a telethon hosted by NBC based closely on the UK example of the same name, Red Nose Day. <SEP> <P2-S0>  Starting as a stand-up comedian in San Francisco and Los Angeles in the mid-1970s, he is credited with leading San Francisco's comedy renaissance. <P2-S1> Robin McLaurin Williams (July 21, 1951 – August 11, 2014) was an American stand-up comedian and actor. <P2-S2>  After rising to fame as Mork in "Mork & Mindy" (1978–82), Williams established a career in both stand-up comedy and feature film acting. <P2-S3>  He was known for his improvisational skills. <SEP> <P3-S0>  It has raised and distributed nearly US$50 million toward providing assistance—including health care services—to homeless people throughout the United States. <P3-S1>  Although Comic Relief's charity work is continuous, its fundraising events were held and televised at irregular intervals—and primarily by Home Box Office (HBO), with comedians Robin Williams, Billy Crystal, and Whoopi Goldberg as the hosts each time. <P3-S2>  They—along with many other comedians, celebrities, and occasional politicians—perform various segments—both general-purpose and specific to homelessness—of standup comedy, sketch comedy, speeches, live music, and impressions of persons and characters—all in order to entertain and enlighten. <P3-S3> Comic Relief USA was a non-profit charity organization whose mission is to raise funds to help those in need—particularly America's homeless. <P3-S4>  There are also documentary segments dealing with real-life problems of homeless people, in order to raise awareness of not only the grim realities but also how many hard-working "ordinary" people can wind up or grow up homeless. <P3-S5>  In exchange for contributions exceeding certain key amounts, T-shirts, sweatshirts and other merchandise are typically for sale.