Don’t. Identifiers should be opaque. If you’re given an owl:sameAs assertion from a party you trust, use that. If you need to mint surrogates because what you’re given aren’t Globally Unique, Persistent and Resolvable Identifiers (GUPRIs) ¹ , either house your inheritance as local parts/suffixes in your global namespace, assert datatype properties to record the historical correspondence, or both.