Table schema:
CREATE TABLE table_name_20 (finalist VARCHAR, surface VARCHAR, semifinalists VARCHAR)

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 table_name_20 WHERE surface = "clay" AND semifinalists = "yevgeny kafelnikov juan carlos ferrero (2)"