Question: Who won the US Open men's singles in 1975, Francesca Schiavone or Manuel Orantes ?

Context articles: 2012 US Open – Men's singles final
1975 U.S. Clay Court Championships
1975 Grand Prix German Open
Francesca Schiavone
1978 U.S. Pro Tennis Championships
1975 Swedish Open
Manuel Orantes
1975 Cairo Open
1975 US Open – Men's Singles
Elena Bovina

The 2012 US Open Men's Singles final was the championship tennis match of the Men's Singles tournament at the 2012 US Open.
 In the final, Andy Murray defeated defending champion Novak Djokovic 7–6, 7–5, 2–6, 3–6, 6–2 to win the match.
 It was the equal-longest US Open men's final in history, lasting 4 hours and 54 minutes (equalling the 1988 US Open final played by Ivan Lendl and Mats Wilander), and the equal second-longest men's final in the Open era, only behind the 2012 Australian Open final.
 By winning the 2012 US Open, Murray became the first British man since Fred Perry in 1936 to win a Grand Slam singles title, and the first British man in the Open Era to do so.
 The match is a significant part of the rivalry between the two players.
 This match also marked a milestone for Murray, as it was his 100th match win at a grand slam tournament.
The 1975 U.S. Clay Court Championships was a combined men's and women's Grand Prix tennis tournament held in Indianapolis in the United States and played on outdoor clay courts.
 It was the seventh edition of the tournament and was held from August 4 through August 11, 1975.
 Third-seeded Manuel Orantes won the men's singles title and the accompanying $16,000 first prize money while Chris Evert won the women's singles title.
The 1975 Grand Prix German Open was a combined men's and women's tennis tournament played on outdoor red clay courts.
 It was the 67th edition of the event and was part of the 1975 Commercial Union Assurance Grand Prix circuit.
 It took place at the Am Rothenbaum in Hamburg, West Germany, from 19 May through 25 May 1975.
 Manuel Orantes won the singles title.
Francesca Schiavone (] ; born 23 June 1980 in Milan) is an Italian tennis player who turned professional in 1998.
 She won the 2010 French Open singles title, becoming the first Italian woman to win a Grand Slam event in singles.
 She was also runner-up at the 2011 French Open.
 Her career high ranking is world No. 4, achieved on 31 January 2011.
 To date, Schiavone is the last one handed-backhand player to win a Grand Slam title on the women's tour.
The 1978 U.S. Pro Tennis Championships was a men's tennis tournament played on outdoor green clay courts (Har-Tru) at the Longwood Cricket Club in Boston, USA.
 The event was part of the 1978 Grand Prix circuit.
 It was the 51st edition of the tournament and was held from August 21 through August 28, 1978.
 Despite pressure to switch to a hard court surface from the Association of Tennis Professionals (ATP) and some leading players, in line with the surface change made that year by the US Open which directly followed the Boston event, the tournament organization elected to remain a clay court tournament in 1978.
 Several top players including Björn Borg, Guillermo Vilas and Jimmy Connors elected not to play the tournament.
 Fourth-seeded and defending champion Manuel Orantes won the singles title and the accompanying $32,000 first-prize money.
 The final was delayed until Tuesday, August 29 due to rain.
The 1975 Swedish Open was a combined men's and women's tennis tournament played on outdoor clay courts held in Båstad, Sweden.
 It was classified as a Group B category tournament and was part of the 1975 Grand Prix circuit.
 It was the 28th edition of the tournament and was held from July 7 through July 13, 1975.
 Manuel Orantes and Sue Barker won the singles titles.
Manuel Orantes Corral (] ; born 6 February 1949) is a former tennis player who was active in the 1970s and 1980s.
 He won the US Open men's singles in 1975, beating defending champion Jimmy Connors in the final.
 Orantes reached a career-high singles ranking of World No. 2.
The 1975 Cairo Open was a men's tennis tournament played on outdoor clay courts that was independent, i.e. not part of the Grand Prix or WCT circuit.
 It was the inaugural edition of the tournament and played at Cairo in Egypt.
 The event was held from 3 March through 9 March 1975 and Manuel Orantes won the singles title.
Manuel Orantes defeated defending champion Jimmy Connors 6–4, 6–3, 6–3 in the final to win the Men's Singles tennis title at the 1975 US Open.
Elena Olegovna Bovina (Елена Олеговна Бовина ) (born 10 March 1983) is a professional tennis player from Russia.
 She reached her career-high singles ranking of World No. 14 in April 2005.
 Her best performance at a Grand Slam came when she got to the quarter finals of the 2002 US Open, defeating Clarisa Fernández, Jelena Dokic, Stéphanie Foretz and Francesca Schiavone before losing to Lindsay Davenport.