class Programm{

    static void Main(string[] args){

        IQueryable<City> cities(){

            return new List<City>(){

                new City("Moscow", 0),

                new City("Krasnoyarsk", 1),

                new City("Aboba", 2)

            }.AsQueryable();

        }

​

        IQueryable<Storage> storages(){

            return new List<Storage>(){

                new Storage("Bogdan", 0, 0),

                new Storage("Aresiny", 1, 1),

                new Storage("Niyaz", 2, 2),

                new Storage("Stalin", 2, 3),

                new Storage("Stakan", 0, 4),

                new Storage("Neck Hurt", 1, 5),

                new Storage("Putin", 0, 6)

            }.AsQueryable();

        }

​

        IQueryable<Product> products(){

            return new List<Product>(){

                new Product("Computer", new List<int>(){0, 1, 2}),

                new Product("Bottle of water", new List<int>(){0, 1, 2}),

                new Product("Iphone", new List<int>(){0})

            }.AsQueryable();

        }

​

        var sort = from storage in storages() select new Products = products().Where(el => el.storageId.Contains(storage.storageId)).ToList();

    }

}

​

class City{

    public int id{get; private set;}

    public string title{get; private set;}

​

    public City(string Name, int Id){

        id = Id;

        title = Name;

    }

}

​

class Storage{

    public int cityId{get; private set;}

    public int storageId{get; private set;}

    public string title{get; private set;}

​

    public Storage(string Title, int CityId, int StorageId){

        title = Title;

        cityId = CityId;

        storageId = StorageId;

    }

}

​

class Product{

    public List<int> storageId{get; private set;}

    public string title{get; private set;}

​

    public Product(string Title, List<int> StorageId){

        title = Title;

        storageId = StorageId;

    }

}