Repeating Comment in JSON-LD Article (Schema.org specifications)

ldjson_1_article_N_comments_using_graph.json

{
  "@context": "http://schema.org",
  "@graph": [
    {
      "@type": "Article",
      "@id": "/articles/foobar",
	  "url" : "https:\/\/exemple.com/article?id=1234",
	  "author" :{"@type" : "Person","name" : "Didier"},
	  "image" : "https:\/\/exemple.com/article.jpg",
	  "mainEntityOfPage" : "https:\/\/exemple.com",
	  "dateModified" : "2018-06-14T19:50:02+02:00",
	  "datePublished" : "2018-06-14T19:50:02+02:00",
	  "publisher" : {"@type" : "Organization","name" : "exemple.com", "logo" : {"@type" : "ImageObject", "url" : "https:\/\/exemple.com\/logo.png"}},
	  "headline" : "my article",
	  "text" : "blah blah",
	  "commentCount" : 2
    },
    {
      "@type": "Comment",
      "@id": "/articles/foobar#comment-1",
      "@reverse": {"comment": {"@id": "/articles/foobar"}},
	  "author" : {"@type" : "Person", "name" : "Didier"},
      "text" : "comment first!!",
      "dateCreated" : "2018-06-14T21:40:00+02:00"
    },
    {
      "@type": "Comment",
      "@id": "/articles/foobar#comment-2",
      "@reverse": {"comment": {"@id": "/articles/foobar"}},
	  "author" : {"@type" : "Person", "name" : "Robert"},
      "text" : "second comment",
      "dateCreated" : "2018-06-14T23:23:00+02:00"
    }
  ]
}

Related to:

• stack overflow question https://stackoverflow.com/questions/51179604/representing-repeating-attributes-in-json-ld
• json ld PHP library : Torann/json-ld#41