List the food type of the restaurant located in 22779 6th St., Hayward City.
22779 refers to street_num = 22779; 6th St. refers to street_name = '6th St'
SELECT T2.food_type FROM location AS T1 INNER JOIN generalinfo AS T2 ON T1.id_restaurant = T2.id_restaurant WHERE T1.street_num = 22779 AND T1.street_name = '6th St' AND T2.city = 'hayward'
CREATE TABLE geographic
(
    city   TEXT not null
        primary key,
    county TEXT null,
    region TEXT null
);
CREATE TABLE generalinfo
(
    id_restaurant INTEGER         not null
        primary key,
    label         TEXT  null,
    food_type     TEXT  null,
    city          TEXT  null,
    review        REAL null,
    foreign key (city) references geographic(city)
            on update cascade on delete cascade
);
CREATE TABLE location
(
    id_restaurant INTEGER        not null
        primary key,
    street_num    INTEGER          null,
    street_name   TEXT null,
    city          TEXT null,
    foreign key (city) references geographic (city)
            on update cascade on delete cascade,
    foreign key (id_restaurant) references generalinfo (id_restaurant)
            on update cascade on delete cascade
);
