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Functional Requirements
RSP queries should support the minimal set of features identified in this document.
The semantics of the RSP data and query model should allow generating predictable results, so that
correctness of the RSP query process can be evaluated.
+ RSP queries should be able to access all annotations of the streaming graphs
+ RSP queries should be able to refer to the named graphs of streams/windows (e.g. for filtering/joining streams, see examples in issue #61).