{
  "@context": {
    "knows": {"@id": "http://xmlns.com/foaf/0.1/knows", "@list": true}
  },
  "@id": "http://greggkellogg.net/foaf#me",
  "knows": ["Manu Sporny"]
}


Update test to container:list syntax
{
  "@context": {
    "knows": {"@id": "http://xmlns.com/foaf/0.1/knows", "@container": "@list"}
  },
  "@id": "http://greggkellogg.net/foaf#me",
  "knows": ["Manu Sporny"]
}