Everything functions correctly. However, there is one tweak I think we should make. When you have multiple spans that cover the same entity, we should only query one time. Example: A / \ B C / / \ D E F Let's say we have an object graph like the one above that we want to fill using Spans. We will pass our FetchSpecification to our AFactory.Find method to retrieve the Entity. If we use the following Spans {"C.F","C.E","B.D"}, this will give us the correct data, but it will run the query for C twice. I propose that we track which Entities we have already queried. Chris