CREATE TABLE HOST (Name VARCHAR(255), Host_ID VARCHAR(255)); CREATE TABLE party_host (Host_ID VARCHAR(255), Party_ID VARCHAR(255)); CREATE TABLE party (Party_ID VARCHAR(255), Number_of_hosts INTEGER)
Show the host names for parties with number of hosts greater than 20.
    
SQL: 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