Question: Elizabeth Smylie and Tomás Carbonell, share which mutual occupation?

Context paragraphs:
2002 French Open – Mixed Doubles: Virginia Ruano Pascual and Tomás Carbonell were the defending champions, but had different outcomes.  Ruano Pascual teamed up with Gastón Etlis and lost in second round to Cara and Wayne Black, while Carbonell did not compete this year due to retiring from professional tennis in 2001.

2000 Estoril Open – Men's Doubles: Tomás Carbonell and Donald Johnson were the defending champions, but did not participate together this year.  Carbonell partnered Juan Balcells, losing in the first round.  Johnson partnered Piet Norval and successfully defended his title.

Elizabeth Smylie: Elizabeth Smylie (née Sayers, born 11 April 1963), sometimes known as Liz Smylie, is a retired Australian professional tennis player.  During her career, she won four Grand Slam titles, one of them in women's doubles and three in mixed doubles.  She also won three singles titles and 36 doubles titles.

2000 Majorca Open – Doubles: Lucas Arnold and Tomás Carbonell were the defending champions, but did not participate together this year.  Arnold partnered Martín García, losing in the first round.  Carbonell partnered Piet Norval, losing in the first round.

1991 US Open – Mixed Doubles: Elizabeth Smylie and Todd Woodbridge were the defending champions but they competed with different partners that year, Smylie with John Fitzgerald and Woodbridge with Nicole Provis.

1986 Wimbledon Championships – Women's Doubles: Kathy Jordan and Elizabeth Smylie were the defending champions but they competed with different partners that year, Jordan with Alycia Moulton and Smylie with Catherine Tanvier.

1989 Pilkington Glass Championships – Doubles: Eva Pfaff and Elizabeth Smylie were the defending champions but they competed with different partners that year, Pfaff with Manon Bollegraf and Smylie with Wendy Turnbull.

1988 New South Wales Open – Women's Doubles: Betsy Nagelsen and Elizabeth Smylie were the defending champions but they competed with different partners that year, Nagelsen with Lori McNeil and Smylie with Jana Novotná.

Tomás Carbonell: Tomás Carbonell Lladó (born 7 August 1968) is a former professional tennis player from Spain.

1994 ATP Buenos Aires – Doubles: Tomás Carbonell and Carlos Costa were the defending champions, but did not participate together this year.  Carbonell partnered Francisco Roig, losing in the final.  Costa partnered Christian Miniussi, losing in the first round.

Supporting paragraphs: Elizabeth Smylie Tomás Carbonell
Answer: professional tennis player