type Pizza {
    id: ID!
    nameEn: String
    nameIt: String!
    toppings: [Topping!]!
}

type Onion {
    variety: String
}

type Cheese {
    quantity: Int!
    type: String!
}

type Pineapple {
    isAnanas: Boolean!
}

type Sushi {
    id: ID!
    topping: Topping
}

type Salmon {
    id: ID!
    raw: Boolean
}

type Omelet {
    isRectangular: Boolean
}

type Query {
    pizza: Pizza
}

union Topping = Onion | Cheese | Pineapple | Salmon | Omelet