Translate the following question to SQL: What are the names of festivals held in year 2007?

Schema: CREATE TABLE festival_detail (
    Festival_ID INT   PRIMARY KEY,
    Festival_Name TEXT,
    Chair_Name TEXT,
    Location TEXT,
    Year INT,
    Num_of_Audience INT,
    UNIQUE (Festival_ID)
);

CREATE TABLE artwork (
    Artwork_ID INT   PRIMARY KEY,
    Type TEXT,
    Name TEXT,
    UNIQUE (Artwork_ID)
);

CREATE TABLE nomination (
    Artwork_ID INT   PRIMARY KEY,
    Festival_ID INT   PRIMARY KEY,
    Result TEXT,
    PRIMARY KEY (Artwork_ID, Festival_ID),
    UNIQUE (Artwork_ID, Festival_ID),
    FOREIGN KEY (Festival_ID) REFERENCES festival_detail(Festival_ID),
    FOREIGN KEY (Artwork_ID) REFERENCES artwork(Artwork_ID)
);
user
SELECT Festival_Name FROM festival_detail WHERE YEAR  =  2007
assistant