CREATE TABLE table_29551 ("Country" CLOB, "Name" CLOB, "Host ( s ) " CLOB, "Judges" CLOB, "Network" CLOB, "Air dates" CLOB)

What is the name of the series with the unknown host?
SELECT "Name" FROM table_29551 WHERE "Host(s)" = 'unknown'
SELECT "Name" FROM "table_29551" WHERE "Host(s)" = 'unknown'