Eg-39-derivation-hadusage-hadgeneration-backtracking

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Identify the problem

Exploring the ambiguity that the qualification pattern produces when using the Derivation's hadUsage and hadGeneration. The implied "influenced" is not cited per the usual qualifiedUsage/qualifiedGeneration property. Instead, one must backtrack through the derivation and "hang left or right" depending on Usage/Generation.


The use of provenance

The PROV example

How PROV is accessed and queried?