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Overall suggestion (score): 1 - needs minor revision
In addition the associated building block does not seem to be really reusable. As it only contains one annotation property, it could be easier to reproduce the building block in an ontology rather than to reuse the owl file attached to the pattern.
Finally, it would be nice to know the rationales for defining "isTemplate" as an annotation property (that has the value True) instead of for example a boolean datatype property.