Compacting rdf:Seq

Hi,

is it possible to compact rdf:Seq?

For example, let's have this JSON-LD:

{
  "@graph": [{
    "ex:list": "_:b1"
  }, {
    "@id": "_:b1",
    "rdf:first": "_:b2",
    "rdf:rest": "_:b3"
  }, {
    "@id": "_:b2",
    "foaf:name": "Alice"
  }, {
    "@id": "_:b3",
    "rdf:first": "_:b4",
    "rdf:rest": "rdf:nil"
  }, {
    "@id": "_:b4",
    "foaf:name": "Bob"
  }]
}

We try to compact it with this context:

{
 "@context": {
    "ex": "http://example.com/",
    "foaf": "http://xmlns.com/foaf/0.1/",
    "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
    "ex:list": {"@container": "@list",
                "@type": "@id"},
    "rdf:first": {"@type": "@id"},
    "rdf:rest": {"@type": "@id"}
  }
}

JSON-LD playground (jsonld.js) returns the following:

{
  "@context": {
    "ex": "http://example.com/",
    "foaf": "http://xmlns.com/foaf/0.1/",
    "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
    "ex:list": {
      "@container": "@list",
      "@type": "@id"
    },
    "rdf:first": {
      "@type": "@id"
    },
    "rdf:rest": {
      "@type": "@id"
    }
  },
  "@graph": [
    {
      "ex:list": [
        "_:b1"
      ]
    },
    {
      "@id": "_:b1",
      "rdf:first": "_:b2",
      "rdf:rest": "_:b3"
    },
    {
      "@id": "_:b2",
      "foaf:name": "Alice"
    },
    {
      "@id": "_:b3",
      "rdf:first": "_:b4",
      "rdf:rest": "rdf:nil"
    },
    {
      "@id": "_:b4",
      "foaf:name": "Bob"
    }
  ]
}

Is it possible to get to a compact representation of rdf:Seq (
http://www.w3.org/TR/json-ld/#sets-and-lists), like the following?

{
  "@context": {
    "ex": "http://example.com/",
    "foaf": "http://xmlns.com/foaf/0.1/",
    "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
    "ex:list": {
      "@container": "@list",
      "@type": "@id"
    },
    "rdf:first": {
      "@type": "@id"
    },
    "rdf:rest": {
      "@type": "@id"
    }
  },
  "@graph": [
    {
      "ex:list": [
        "_:b2", "_:b4"
      ]
    },
    {
      "@id": "_:b2",
      "foaf:name": "Alice"
    },
    {
      "@id": "_:b4",
      "foaf:name": "Bob"
    }
  ]
}

- Jindřich

-- 
Jindřich Mynarz
http://mynarz.net/#jindrich