How I would do it. A first stop for common RDF tasks is schema.org. I go there and I look up “customer” and find a number of predicates. I poke around at to see if schema has enough to cover what I need (it often does for common tasks). If something is missing, I go to the LOV ontology search engine and search for customer. I spend an hour or two poking around looking at vocabularies that cover it. All in all I’ve spent half a day or a day researching ontologies and terms which sharpens my understanding of the domain. After I’ve done this for several projects the time doing that is diminished drastically.
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