René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"JSON-LD to Turtle serialization eats up @id with no value","articleBody":"re: https://github.com/solid/node-solid-server/pull/496#issuecomment-286242305\r\n\r\n`http://example.org/resourceA` contains:\r\n`{ \"@id\": \"http://example.net/note#foo\", \"http://schema.org/citation\": { \"@id\": \"http://example.org/article#results\" } }`\r\n\r\n```\r\n$ curl -H'Accept: text/turtle' http://example.org/resourceA\r\n@prefix note: \u003chttp://example.net/note#\u003e.\r\n@prefix schem: \u003chttp://schema.org/\u003e.\r\n@prefix n0: \u003chttp://example.org/article#\u003e.\r\n\r\n   note:foo schem:citation n0:results .\r\n```\r\n\r\nLooks good to me.\r\n\r\n`http://example.org/resourceB` contains:\r\n`{ \"@id\": \"\", \"http://schema.org/citation\": { \"@id\": \"http://example.org/article#results\" } }`\r\n\r\n```\r\n$ curl -H'Accept: text/turtle' http://example.org/resourceB\r\n\r\n```\r\n\r\nNo body.\r\n","author":{"url":"https://github.com/csarven","@type":"Person","name":"csarven"},"datePublished":"2017-03-13T21:12:41.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/497/node-solid-server/issues/497"}