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

Which parties have more than 20 hosts? Give me the host names for these parties.
SELECT T2.name FROM party_host AS T1 JOIN host AS T2 ON T1.host_id = T2.host_id JOIN party AS T3 ON T1.party_id = T3.party_id WHERE T3.number_of_hosts > 20
SELECT "T2"."name" FROM "party_host" "T1" JOIN "host" "T2" ON "T1"."host_id" = "T2"."host_id" JOIN "party" "T3" ON "T1"."party_id" = "T3"."party_id" AND "T3"."number_of_hosts" > 20