How to create a nested schema in apollo graphql server

type Query {
  Movie(_id: String, movieId: ID, title: String, year: Int, description: String, first: Int, offset: Int, orderBy: [_MovieOrdering]): [Movie]
  Actor(actorId: ID, name: String, _id: String, first: Int, offset: Int, orderBy: [_ActorOrdering]): [Actor]
}

type Mutation {
  CreateMovie(movieId: ID, title: String, year: Int, description: String): Movie
  UpdateMovie(movieId: ID!, title: String, year: Int, description: String): Movie
  DeleteMovie(movieId: ID!): Movie
  AddMovieActors(from: _ActorInput!, to: _MovieInput!): _AddMovieActorsPayload
  RemoveMovieActors(from: _ActorInput!, to: _MovieInput!): _RemoveMovieActorsPayload
  AddMovieRatings(from: _UserInput!, to: _MovieInput!, data: _RatingInput!): _AddMovieRatingsPayload
  CreateActor(actorId: ID, name: String): Actor
  UpdateActor(actorId: ID!, name: String): Actor
  DeleteActor(actorId: ID!): Actor
  AddActorMovies(from: _ActorInput!, to: _MovieInput!): _AddActorMoviesPayload
  RemoveActorMovies(from: _ActorInput!, to: _MovieInput!): _RemoveActorMoviesPayload
}