Question: Who are the Semifinalists, when the Week is May 12?
SQL: SELECT "Semifinalists" FROM "2-16780573-1" WHERE "Week" = 'May 12';

Question: Who is the Finalist, when the Surface is Clay, and when the Semifinalist is Yevgeny Kafelnikov Juan Carlos Ferrero (2)?
SQL: SELECT "Finalist" FROM "2-16780573-1" WHERE "Surface" = 'Clay' AND "Semifinalists" = 'Yevgeny Kafelnikov Juan Carlos Ferrero (2)';

Question: What is the Surface, when the Finalist is Andrei Pavel?
SQL: SELECT "Surface" FROM "2-16780573-1" WHERE "Finalist" = 'Andrei Pavel';

Question: Who is the Winner, when the Surface is Carpet (i)?
SQL: SELECT "Winner" FROM "2-16780573-1" WHERE "Surface" = 'Carpet (i)';

Question: What is the Week, when the Finalist is Carlos Moyá (5)?
SQL: SELECT "Week" FROM "2-16780573-1" WHERE "Finalist" = 'Carlos Moyá (5)';

Question: What is the Tournament, on the Week of May 5?
SQL: SELECT "Tournament" FROM "2-16780573-1" WHERE "Week" = 'May 5';