Duplicate and shared list nodes in RDF to JSON-LD serialization

Good evening.

I am currently implementing the JSON-LD API for the Go programming
language. I am working on RDF to JSON-LD serialization and my code passes
all the tests except for the last three (test cases fromRdf20, fromRdf21,
and fromRdf22). These three test cases are concerned with list nodes that
are duplicate or shared among multiple graphs. I went through the current
version of the API implementation but I cannot find any step where it's
specified what to do in these situations.

Is the current specification of the "Serialize RDF as JSON-LD" able to pass
those tests? If that's the case, any hints on which steps of the algorithm
to look into would be appreciated.

Best,

-- 
Martin Martinez Rivera