anchor.diff:  query OldArtworkQuery($artworkID: String!) {
     artwork(id: $artworkID) {
  +    id
  +    _id
  + 
       artist {
         id
         _id
  
positive.code:       href
      }
  
      id
      _id
      date
      title
  
      can_share_image
      collecting_institution
      images {
        id
        image_versions
        image_url
  
      }
      additional_information
      dimensions {
        cm
        in
  
negative.code:       birthday
        nationality
        blurb
        image {
          url
        }
  