Question: Claudia Kohde-Kilsch and Xavier Malisse, have which mutual occupation?

Context paragraphs:
2001 Verizon Tennis Challenge – Singles: Andrew Ilie was the defending champion but lost in the quarterfinals to Xavier Malisse.  Andy Roddick won in the final 6–2, 6–4 against Malisse, which was the first title of his career.

1988 Southern Cross Classic – Doubles: Sylvia Hanika and Claudia Kohde-Kilsch won in the final 7–5, 6–7, 6–4 against Lori McNeil and Jana Novotná.

2008 Chennai Open – Doubles: Xavier Malisse and Dick Norman were the defending champions, but Norman chose not to participate, and only Malisse competed that year.

2012 Farmers Classic – Doubles: Xavier Malisse, with fellow countryman Ruben Bemelmans, defended his title, defeating Jamie Delgado and Ken Skupski 7–6, 4–6, [10–7] in the final.  Mark Knowles and Malisse were the defending champions but Knowles decided not to participate.

2009 Seguros Bolívar Open Bogotá – Doubles: Xavier Malisse and Carlos Salamanca were the champions in 2008, but Malisse chose to not start this year.

Bettina Bunge: Bettina Bunge (born 13 June 1963) is a retired German tennis player.  She was born in Adliswil, Switzerland.  She was part of a large group of successful German players in the 1980s, which also included Steffi Graf, Claudia Kohde-Kilsch, Sylvia Hanika, and Eva Pfaff.

1987 Wimbledon Championships – Women's Doubles: Claudia Kohde-Kilsch and Helena Suková defeated Betsy Nagelsen and Elizabeth Smylie 7-5, 7-5 in the final to win the Ladies' Doubles title at the 1987 Wimbledon Championships.

Claudia Kohde-Kilsch: Claudia Kohde-Kilsch ("née" Kohde; born 11 December 1963) is a former German tennis player and member of the "Die Linke".  During her tennis career, she won two women's doubles Grand Slam titles.  She also won eight singles titles and a total of 25 doubles titles.

Xavier Malisse: Xavier Malisse (born 19 July 1980) is Belgian retired professional tennis player.  Born in the north-western Flemish city of Kortrijk and nicknamed "X-Man", he is only one of two players from Belgium (the other being David Goffin) to have been ranked in the top 20 of the ATP tour, with a career-high singles ranking of World No. 19.

1988 Citizen Cup – Doubles: Claudia Kohde-Kilsch and Jana Novotná were the defending champions but only Novotná competed that year with Tine Scheuer-Larsen.

Supporting paragraphs: Claudia Kohde-Kilsch Xavier Malisse
Answer: tennis player