Translate the following question to SQL: Show the most common nationality of hosts.

Schema: CREATE TABLE party (
    Party_ID INT   PRIMARY KEY,
    Party_Theme TEXT,
    Location TEXT,
    First_year TEXT,
    Last_year TEXT,
    Number_of_hosts INT,
    UNIQUE (Party_ID)
);

CREATE TABLE host (
    Host_ID INT   PRIMARY KEY,
    Name TEXT,
    Nationality TEXT,
    Age TEXT,
    UNIQUE (Host_ID)
);

CREATE TABLE party_host (
    Party_ID INT   PRIMARY KEY,
    Host_ID INT   PRIMARY KEY,
    Is_Main_in_Charge bool,
    PRIMARY KEY (Party_ID, Host_ID),
    UNIQUE (Party_ID, Host_ID),
    FOREIGN KEY (Party_ID) REFERENCES party(Party_ID),
    FOREIGN KEY (Host_ID) REFERENCES host(Host_ID)
);
user
SELECT Nationality FROM HOST GROUP BY Nationality ORDER BY COUNT(*) DESC LIMIT 1
assistant