{
  book(id: "c234e8ed-33e3-4265-aeae-3eefc09debc3") {
    title
    authors {
      name
      isni
      alias
    }
  }
}

{
  "status": 500,
  "errors": [
    {
      "message": "Exception while fetching data (/alias): property /My-Good-Authors/H.-G.-Wells/alias is a multi-valued property, so it's values can only be retrieved as an array",
      "locations": [
        {
          "line": 7,
          "column": 7,
          "sourceName": null
        }
      ],
      "errorType": "DataFetchingException",
      "path": [
        "book",
        "authors",
        0,
        "alias"
      ],
      "extensions": null
    }
  ]
}