user: Question: WHO WAS THE SEMIFINALISTS FOR THE Hamburg TOURNAMENT?
Columns: ['Tournament', 'Surface', 'Week', 'Winner', 'Finalist', 'Semifinalists']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Indian Wells', 'Hard', 'March 6', 'Roger Federer (1) 7–5, 6–3, 6–0', 'James Blake (12)', 'Paradorn Srichaphan Rafael Nadal (2)']
SQL:

assistant: SELECT "Semifinalists" FROM "Table" WHERE "Tournament" = 'Hamburg';