user: Question: When playing on Grass who was the opponents in a year greater than 1993, and playing with Jonas Björkman?
Columns: ['Outcome', 'Year', 'Championship', 'Surface', 'Partner', 'Opponents', 'Score']
Types: ['text', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Winner', 1992.0, 'Australian Open , Melbourne', 'Hard', 'Mark Woodforde', 'Kelly Jones Rick Leach', '6–4, 6–3, 6–4']
SQL:

assistant: SELECT "Opponents" FROM "Table" WHERE "Surface" = 'Grass' AND "Year" > 1993.0 AND "Partner" = 'Jonas Björkman';