GraphQL schema:

type GET_search_tv_ResultsEntry {
  adult: Boolean
  backdrop_path: String
  first_air_date: Date
  genre_ids: [Int]
  id: Int
  name: String
  origin_country: [String]
  original_language: String
  original_name: String
  overview: String
  popularity: Float
  poster_path: String
  vote_average: Float
  vote_count: Int
}

type GET_search_tv_Root {
  page: Int
  results: [GET_search_tv_ResultsEntry]
  total_pages: Int
  total_results: Int
}

type Query {
  GET_search_tv(query: String, tmdb_access_token: String!): GET_search_tv_Root
    @rest(
      endpoint: "https://api.themoviedb.org/3/search/tv"
      headers: [{ name: "authorization", value: "Bearer $tmdb_access_token;" }]
    )
}
type GET_tv__tv_id__season__season_number__episode__episode_number__images_Root {
  id: Int
  stills: [JSON]
}

type Query {
  GET_tv__tv_id__season__season_number__episode__episode_number__images(
    episode_number: String!
    season_number: String!
    tmdb_access_token: String!
    tv_id: String!
  ): GET_tv__tv_id__season__season_number__episode__episode_number__images_Root
    @rest(
      endpoint: "https://api.themoviedb.org/3/tv/$tv_id;/season/$season_number;/episode/$episode_number;/images"
      headers: [{ name: "authorization", value: "Bearer $tmdb_access_token;" }]
    )
}

Utterance:  give me a poster of the third episode of Band of Brothers