Question: In the Tupac Shakur song Hail Mary, who is the close friend he used for one of the verses?

full_context: Document 1: Khalid al-Odah: Khalid al-Odah is the father of Guantanamo Bay detainee, Fawzi al-Odah, and the founder of the Kuwaiti Family Committee, a group established in 2004 to heighten global awareness of the prisoners in Guantanamo Bay. Over the past five years, Khalid has waged legal, media, and public relations campaigns to promote the need for due process for the prisoners at Guantanamo. In 2004, Khalid brought his son's case to the Supreme Court Rasul v. Bush/ al-Odah v. Bush.
Document 2: Yasser Arafat: Mohammed Yasser Abdel Rahman Abdel Raouf Arafat al-Qudwa ( ; Arabic: محمد ياسر عبد الرحمن عبد الرؤوف عرفات‎ ‎ ‎ ; 24 August 1929 – 11 November 2004), popularly known as Yasser Arafat (Arabic: ياسر عرفات‎ ‎  , "Yāsir `Arafāt ") or by his kunya Abu Ammar (Arabic: أبو عمار‎ ‎  , "'Abū `Ammār "), was a Palestinian political leader. He was Chairman of the Palestine Liberation Organization (PLO) from 1969 to 2004 and President of the Palestinian National Authority (PNA) from 1994 to 2004. Ideologically an Arab nationalist, he was a founding member of the Fatah political party, which he led from 1959 until 2004.
Document 3: Tupac Shakur discography: The discography of Tupac Shakur, an American rapper consists of eleven studio albums. Four were released before Shakur's death on September 13, 1996 and seven were posthumously released, the first being "The Don Killuminati: The 7 Day Theory" released on November 5, 1996 (although the album was finished before Shakur's death). As of 2007, Tupac Shakur has sold over 75 million records worldwide, which makes him one of the highest selling rap artists of all time. As of June 2014, he was the second best-selling rap or hip-hop artist of the Nielsen Soundscan era in the United States with 29,235,000 albums sold. The RIAA has certified his album sales at 36.5 million. However he sold an additional 5 million under his Makaveli name which gives him 42.5 million overall.
Document 4: Rachid Belkacem: Rachid Belkacem (1973 - July 5, 2006) was a Dutch national, and a suspected member of the terrorist organisation Hofstad Network. He was never convicted in court. His nickname was Abu Fadel, he was a friend of Mohammed Bouyeri, the murderer of Dutch filmmaker Theo van Gogh.
Document 5: Hail Mary (2Pac song): "Hail Mary" is a single by American rapper Tupac Shakur from his final album "", under the new stage name, Makaveli. The song, released after his September 1996 death, features rap verses by Kastro, Young Noble and Yaki Kadafi of The Outlawz and Prince Ital Joe. A music video was shot for the song and can be found on the DualDisc of "The Don Killuminati: The 7 Day Theory". It is one of Shakur's most famous singles. The single peaked at number 12 in the R&B chart, and number 8 in the rap singles.
Document 6: Yaki Kadafi: Yafeu Akiyele Fula (October 9, 1977 – November 10, 1996), better known by his stage name Yaki Kadafi, was an American rapper who was best known as a founder and member of the rap groups Outlawz and Dramacydal. Kadafi's parents, Yaasmyn Fula and Sekou Odinga, were both members of the Black Panther Party. Fula, and Tupac Shakur's mother, Afeni Shakur, were close friends, and Kadafi and Tupac were friends until their deaths in 1996.
Document 7: Stretch (rapper): Randy Walker (April 8, 1968 – November 30, 1995), better known by his stage name Stretch, was an American hardcore hip hop rapper and producer and close friend and collaborator of Tupac Shakur. A member of the Live Squad with his brother Majesty, the group was notable for their early recordings with Shakur and The Notorious B.I.G. until the 1994 attack on Shakur at Quad Recording Studios resulted in a highly publicised falling out. On 30 November 1995, Stretch was the first of the three former friends to be murdered.
Document 8: Yas Taalat: Yas Taalat is a recording artist and song writer born in Sudbury now based in Toronto. He is the co-founder and lead singer of the popular gold selling status band Project Wyze and currently the successful hip hop group Dead Celebrity Status. Yas had been making music and performing since the early age of 13 and toured with hip hop group Public Enemy by the time he was 14 years of age. Yas and band partner Bobby made a name for themselves across North America as gifted lyricists and ferocious battle emcee's. Though born in Canada his parents hail from Morocco. He is Muslim and talks about the pains and struggles of being one in this post 9/11 world on the Dead Celebrity Status track "In This Day and Age" featuring Jeordie White aka Twiggy Ramirez from Marilyn Manson and Bif Naked.
Document 9: Tupac Shakur: Tupac Amaru Shakur ( (born Lesane Parish Crooks; June 16, 1971September 13, 1996), also known by his stage names 2Pac and Makaveli, was an American rapper and actor. Shakur has sold over 75 million records worldwide, making him one of the best-selling music artists of all time. His double disc albums "All Eyez on Me" (1996) and his "Greatest Hits" (1998) are among the best-selling albums in the United States. Shakur is consistently ranked as one of the greatest and most influential rappers of all time, and he has been listed and ranked as one of the greatest artists of any genre by many publications, including "Rolling Stone", which ranked him 86th on its list of The 100 Greatest Artists of All Time. On April 7, 2017, Shakur was inducted into the Rock and Roll Hall of Fame.
Document 10: Flockaveli: Flockaveli is the debut studio album by American rapper Waka Flocka Flame. Its title of the album was taken after the Italian political theorist Machiavelli, and inspired by fellow American rapper Tupac Shakur, whose final stage name and pseudonym before his death was Makaveli. The album was recorded at Next Level Studios in Houston, NightBird Recording Studios in West Hollywood, and S-Line Ent. in Atlanta.
Document 11: Congress of Afrikan People: The Congress of Afrikan people (CAP) was a proponent of black nationalism. Active in the 1970s, CAP's ideology was set around Maoist theory and practice. Its activities illustrate fluidity and changing nature of black radicalism in this period. It later became the Revolutionary Communist League (Marxist-Leninist-Mao Tse-tung Thought), led by Amiri Baraka, which merged into the League of Revolutionary Struggle (Marxist-Leninist). When this group split, some of the members went into Freedom Road Socialist Organization.
Document 12: Gylan Kain: Gylan Kain is an American poet and playwright. He is a founding member, in 1968, of the Original Last Poets (along with Felipe Luciano and David Nelson). He is known for creating the aggressive, rhythmic delivery of spoken word aka performance poetry as it is known today. He often performs with hand drums or backing musicians such as saxophonists and bass guitarists. His work has often been sampled without pre-consent by well-known artists including Dr. Dre and The Prodigy. One of his performances was sampled into the club hit "Voodoo People" by The Prodigy. Dr. Dre sampled an excerpt of Kain performing his poem, "The Shalimar" on Dre's track entitled "Intro" from the album entitled "The Chronic." After legal action was successfully taken to procure compensation for work sampled by The Prodigy, spokespersons for The Prodigy claimed that efforts had been made to procure permission from Kain for use of his work but those efforts had been unsuccessful because Kain, who values privacy, could not be located in time. Dr. Dre has yet to compensate Kain for work sampled without prior consent. This has led some fans to criticize Dr. Dre as an hypocrite for exploiting the work of an influential Black artist after building a reputation as an empowering force in the black American community as a founding member of N.W.A.
Document 13: Makaveli Branded Clothing: Makaveli Branded is the official clothing line of Tupac Shakur, created by Paul Meltzer, who licensed the rights from his mother, Afeni Shakur, and Rick Barlowe, her partner. The original concept was shaped with designer Willie Montanez from an idea conceived by Rips Meltzer. It was launched seven years after the death of her son. The brand's purpose is keeping the legacy of Tupac Shakur alive through fashion. It was the first label to use personal images as a part of an integrated designer clothing line, rather than just a promotional T-shirt. A portion of each sale from Makaveli Branded is donated to the Tupac Amaru Shakur Foundation and Tupac Amaru Shakur Center for the Arts in Atlanta, Georgia.
Document 14: Amaru Entertainment: Amaru was founded by Afeni Shakur, in early 1997 to handle the release of the unreleased material her son had created before his death on September 13, 1996. After the death of 2Pac, the label inherited the rights to "2Pacalypse Now", "Strictly 4 My N.I.G.G.A.Z", "Thug Life Vol. 1", and "Me Against the World". Amaru has also released 8 posthumous albums by 2Pac and a documentary, "". On May 2, 2016, Afeni Shakur died.
Document 15: Kastro (Outlawz): Katari Terrance Cox (born December 30, 1976) better known by his stage name Kastro, is an American rapper. Best known for being part of Tupac Shakur's rap group Outlawz. He was also blood cousins with Shakur and is featured on many of the late rapper's songs such as "Made Niggaz", & "Hail Mary". When he was in Elementary School, he introduced his friend, and future Outlawz rapper, Malcolm Greenridge, later named E.D.I. Mean, to his cousin.
ground_truth: Yaki Kadafi