query{
  posts {
    title,
    comments {
      content, author {name}
    },
    author {
      name,
      bio
    }
  }
}

mutation {
  createComment(data: {
    postTitle: "Hello world",
    content: "Hello!",
    authorName: "Ivana"
  }) {
    content,
    author {
      name
    },
    timestamp
  }
}