Question: Which of these tennis players is from Germany, Mike Bryan or Michael Stich?

Context paragraphs:
1994 ABN AMRO World Tennis Tournament: The 1994 ABN AMRO World Tennis Tournament was a tennis tournament played on indoor carpet courts.  It was the 22nd edition of the event known that year as the ABN AMRO World Tennis Tournament, and was part of the ATP World Series of the 1994 ATP Tour.  It took place at the Ahoy Rotterdam indoor sporting arena in Rotterdam, Netherlands, from 21 February through 27 February 1994.  Michael Stich won the singles title.

1991 Wimbledon Championships: The 1991 Wimbledon Championships was a Grand Slam tennis tournament played on :grass courts at the All England Lawn Tennis and Croquet Club in Wimbledon in London in England.  It was the 105th edition of the Wimbledon Championships and were held from 24 June to 7 July 1991.  Michael Stich and Steffi Graf won the singles titles.

2010 French Open – Legends Under 45 Doubles: Paul Haarhuis and Cédric Pioline were the defending champion, but Haarhuis did not play this year.Pioline partnered up with Arnaud Boetsch, but they were eliminated by Goran Ivanišević and Michael Stich in the round-robin stage. Yevgeny Kafelnikov and Andriy Medvedev won in the final 6–1, 6–1 against Ivanisevic and Stich.

Piet Norval: Pieter ("Piet") Norval (born 7 April 1970) is a former tennis player from South Africa, who turned professional in 1988.  The right-hander represented his native country in the doubles competition at the 1992 Summer Olympics in Barcelona, where he partnered Wayne Ferreira.  The pair won the silver medal, after losing the final to Boris Becker and Michael Stich from Germany.  Norval reached his highest singles ATP-ranking on 19 June 1989, when he became the no. 125 of the world.

1998 Gerry Weber Open – Doubles: Karsten Braasch and Michael Stich were the defending champions, but Stich retired after the 1997 season and Braasch played with Jens Knippschild, but lost in the first roundEllis Ferreira and Rick Leach won the final 4–6, 6–4, 7–6 against John-Laffnie de Jager and Marc-Kevin Goellner.

1995 Infiniti Open: The 1995 Infiniti Open was a men's tennis tournament held at the Los Angeles Tennis Center in Los Angeles, California, United States.  The tournament was played on hard court and was held from July 31 through August 7.  Second-seeded Michael Stich won the singles title.

1993 Wimbledon Championships – Men's Doubles: John McEnroe and Michael Stich were the defending champions but only Stich competed that year with Wayne Ferreira.

1996 European Community Championships: The 1996 European Community Championships was a men's tennis tournament played on indoor carpet courts at the Sportpaleis Antwerp in Antwerp in Belgium and was part of the Championship Series of the 1996 ATP Tour.  The tournament ran from 19 February through 25 February 1996.  Michael Stich won the singles title.

Mike Bryan: Michael Carl Bryan (born April 29, 1978) is an American professional tennis player.  The right-hander turned professional in 1998.  With his twin brother Bob, he has been world No. 1 doubles player for much of the last several years, first achieving top ranking in September 2003, and they became the second men's doubles team to complete the career golden slam by winning the 2012 Summer Olympics.  He currently holds the records for the most ATP men's doubles titles (115) and final appearances (171), and is tied for fourth all-time in men's titles in the Open Era, all with his brother with the exception of one with Mahesh Bhupathi and another with Mark Knowles.

Michael Stich: Michael Detlef Stich (born 18 October 1968) is a former professional tennis player from Germany.  He won the men's singles title at Wimbledon in 1991, the men's doubles titles at both Wimbledon and the Olympic Games in 1992, and was a singles runner-up at the 1994 US Open and the 1996 French Open.  Stich won 18 singles titles and 10 doubles titles.  His career-high singles ranking was World No. 2 in 1993.

Supporting paragraphs: Mike Bryan Michael Stich
Answer: Michael Detlef Stich