Datasets generated by this extractor.
Datasets generated by this extractor. Used for serialization. If a mapping implementation does not return all datasets it produces, serialization may fail.
The subject URI of the generated triples
A graph holding the extracted data
when extractor needs some finalization
when extractor needs some finalization
when extractor has a pre-phase
when extractor has a pre-phase
TODO: change the syntax on the mappings wiki to allow an arbitrary number of template properties.