CREATE TABLE host (host_id DECIMAL, name TEXT, nationality TEXT, age TEXT)
CREATE TABLE party (party_id DECIMAL, party_theme TEXT, location TEXT, first_year TEXT, last_year TEXT, number_of_hosts DECIMAL)
CREATE TABLE party_host (party_id DECIMAL, host_id DECIMAL, is_main_in_charge others)

List the names of hosts who did not serve as a host of any party in our record.
SELECT name FROM host WHERE NOT host_id IN (SELECT host_id FROM party_host)
SELECT "name" FROM "host" WHERE NOT "host_id" IN (SELECT "host_id" FROM "party_host")