Turtle export classification of subclasses / individuals needs improvement

[AJKellmann]

What version of EMX2 are you using (see footer) v10.4.5-SNAPSHOT

Describe the bug In the rdf export some individuals are encoded as subclasses instead of individuals.

• Years each individual year is not a subclass of year, but an individual
• Units each individual Unit is not a subclass of Units, but an individual, the might be encoded using the qudt ontology.
• Titles each individual title is not a subclass of titles, but an individual Same holds for
• Study status
• Study Quality Marks
• Standardized tools
• Regions
• Refresh Periods
• Months
• Languages
• Funding types
• Countries

Some look like annotation properties

• Keywords

  Some look like a data properties

• Study requirements
• Study features
• Study details
• Status
• Formats

To Reproduce Steps to reproduce the behavior:

Download the TTL for the catalogue model
Load it in Protege
Review the class hierarchy

Expected behavior Individuals are not encoded as subclasses, but as individuals

Additional context Exporting RDF is still under active development, so we need to improve it step by step.

[esthervanenckevort]

Partially this is a data modelling issue. These are all modelled with the Ontology tables. Some of these definitely should not be modelled as Ontology tables (e.g. years). The bigger issue is that we can have multiple things in ontology tables and not a generic way of deciding what is in the ontology table. Is it a class with subclasses, a class with instances, properties? Unless we have a way to tell them apart any choice will have issues with those that don't fit that choice.