Question: What item was used by Mariana Kovacevic to heal the football striker Asamoah Gyan during the 2012 African Cup of Nations?
Context: Asamoah Gyan ( , , born 22 November 1985 in Accra) is a Ghanaian professional footballer who plays as a striker for Kayserispor and captains the Ghanaian national team. Patrick Phiri (born 3 May 1956) is a Zambian football coach and former footballer.  He featured for Zambian clubs Rokana United (now Nkana F.C.) and Red Arrows as a striker and represented Zambia at the 1978 and 1982 African Cup of Nations tournaments.  As a coach, Phiri led the Zambia U-20 national team to its first ever appearance at the World Youth Cup in Nigeria in 1997 and was voted Zambian Coach of the year in 1999.  He was also in charge of Zambia at the 2008 African Cup of Nations tournament in Ghana and is currently managing Green Buffaloes Football Club (GBFC) in the Zambian Premier League. Mariana Kovacevic is a Serbian traditional healer who has specialized in the use of horse placenta treatment to heal athletes.  During the duration of the 2012 African Cup of Nations in Gabon and Equatorial Guinea she used the horse placenta treatment to heal Ghana's Asamoah Gyan, who had been injured and was supposed to be off football for four weeks.  She is reported to have nursed him back to health in four hours.  She was also reportedly enlisted by the Serbia during the world of 2010 in south Africa.  Other footballers who are reported to have been treated by Mariana include Pablo Zabaleta, Vincent Kompany, Nigel de Jong and Robin Van Persie of Manchester United.  There has been some doubt as to whether Mariana's therapies work.  But more footballers are turning to her for help. Mohammed Ahmed Bashir, also known as Bisha, (born 23 May 1987) is a Sudanese footballer who plays for the Sudanese club Al-hilal Omdurman.  He plays as a striker and also a winger.  He is a member of the Sudan national football team.  He was brought from Al-Mourada SC to Al-Hilal in December 2010.  After having a brilliant season with Al-Hilal in 2011, he was linked with Leyton Orient and Arsenal.He scored Sudan first goal in 36 years in the 2012 African Cup Of Nations against Angola in the group B which ended in a 2 : 2 .  He was transferred to Saudi club Al-Wehda in June 2012.  He scored his first goal for Al-Wehda against Al-Ahli in a friendly match which Al-Wehda won 0 : 4.  Bisha later scored his first league, competitive goal for his new side with a beauty against the Saudi League champions Al-Shabab but the team lost 2: 5.  He has been a fan favourite in Makkah and in Sudan as he scored his national team since playing his trade in Saudi Arabia against Ethiopia which Sudan won the match 5:3 in a qualifier match for the 2013 AFCON to be helding in South Africa. James Soto Roberts ( born 10 January 1992), commonly known as Soto, is a Liberian international footballer who plays as a striker for The Lions FC in the Seychelles League.  In July 2014, he moved from Liberian club LPRC Oilers to The Lions Fc in the Seychelles League.  Soto scored 6 goals in 12 appearances for The Lions FC during the 2014-2015 Season, winning the MVP during the 2008/2009 season in the Liberian Premier League with the Liberia Black Star FC including 2 Championship with Liberia Black Star and LPRC Oilers.  Soto represented Liberia Under 23 Team in the 2011 WAFU Nations Cup and was also call up to the Liberia national football team in the 2011/2012 African Cup of Nations.  qualifier. Felix Owolabi (born 24 January 1956) is a Nigerian footballer who played for the Nigerian national team.  Playing much of his career as a left winger, he played for Nigeria at the 1978 African Cup of Nations and at the 1980 Summer Olympics.  He played with the Nigerian teams that came third at the 1978 African Cup of Nations and won the African Cup of Nations in 1980. Abdelhamid Sadmi (born January 1, 1961) is an Algerian international football defender who played for Algeria in the 1986 FIFA World Cup, as well as the 1984 African Cup of Nations and the 1986 African Cup of Nations.  At the club level, he spent his entire senior career with JS Kabylie with whom he won the African Cup of Champions Clubs twice in 1981 and 1990. Ben Bamfuchile (12 April 1960 – 27 December 2007), also known as Ben Pabili, was a Zambian football defender and coach.  Bamfuchile played for the Nkana Red Devils in the 1980s and later coached the same team, as well as the Zambia national football team from 1998 to 2000, holding the distinction of qualifying Zambia to the 2000 African Cup of Nations with best record amongst all the teams of 5 wins and a draw in the 6 qualifying games.  Bamfuchile also coached Namibia and therefore coached and led two different teams to the African Cup of Nations; the Zambia national football team in the 2000 African Cup of Nations, and the Namibia national football team in 2008.  He managed Namibia from 2006 until his death. USM Alger whose team has regularly taken part in Confederation of African Football (CAF) competitions.  Qualification for Algerian clubs is determined by a team's performance in its domestic league and cup competitions, USM Alger have regularly qualified for the primary African competition, the African Cup, by winning the Ligue Professionnelle 1.  USM Alger have also achieved African qualification via the Algerian Cup and have played in both the former African Cup Winners' Cup and the CAF Cup.  the first match was against CARA Brazzaville and ended in victory for USM Alger 2–0 As for the biggest win result was in 2004 against ASFA Yennenga 8–1, and biggest loss firstly defeat in 1998 against Primeiro de Agosto club, and the secondly in 2013 away at against US Bitam 3–0, first participation in International competition were in the African Cup Winners' Cup in 1982 and the maximum in the quarter-finals against Ghanaian club Hearts of Oak, in the 1989 version of the same competition and the club withdrew from the same role after the loss in the first leg against Malagasy club BFV at Omar Hamadi Stadium, after that to miss the club's continental competitions for eight years until 1997 in the CAF Champions League for the first time, The beginning was against CD Travadores from the Cape Verde and ended with score 9–2 in total after the second round faced Udoji United Nigerian club and ended with a total of 3–2 to qualify the team for the group stage, where he signed with Raja Casablanca from Morocco, Primeiro de Agosto from Angola and recently Orlando Pirates of South Africa and the team finished second with 11 points, three victories, two draws and a single defeat was against Primeiro de Agosto score 1–2 away from home, and almost USM Alger advance to the final match and goal difference in favor of Raja Casablanca.  the following year in the Cup Winners' Cup USMA eliminated in the quarter-final against Angola's Primeiro de Agosto 1–5 on aggregate and before the piece in the second round faced Ghapoha Readers Ghanaian club finished 2–0 on aggregate.  then he participated in the CAF Cup for the first and last time the first match was against Horoya AC and ended in favor of the Union by away goals rule.  later in the second round and faced Al-Ahli Wad Madani from Sudan, where they won back and forth a total of 7–0 to stop the march of the team in the quarter-final against Wydad Casablanca by away goals rule one more time. Tobie Bayard Mimboe (sometimes referred to as Toby Mimboe), is a retired Cameroonian footballer.  He played for several teams, mostly in South America.  He started in Cameroonian team Olympic Mvolyé.  In his long career, he played in Paraguay for Deportivo Recoleta, Colegiales, Sportivo Luqueño, 12 de Octubre and Cerro Porteño, in Turkey for Gençlerbirliği, in Argentina for San Lorenzo, in Bolivia for The Strongest and in China for Shenyang Haishi.  He was capped for the Cameroon national football team, and participated in two African Cup of Nations, in the 1996 African Cup of Nations, and 1998 African Cup of Nations
Answer: horse placenta