/// <summary>Create graph with Id and data from other graphs</summary>
public Graph(IRdfData rdf,
Node <UriOrBlank> id,
IEnumerable <Node <UriOrBlank> > other)
{
_rdf = rdf;
Id = id;
Other = other.Distinct()
.Where(x => x != id)
.ToArray();
_includedQuads = rdf.GraphData(Other);
}