Make sure correct RDF is created when importing from KGReasoning #58
Description
The datasets in KGReasoning do not adhere to RDF standards. Identifiers are not valid URIs. This is not an issue for many systems, but if one wants to load the data into a triple store, it won't work.
Breaking change: we will check upon importing whether the identifiers are valid URIs. If that is not che case, we will add the 'gqs:' protocol to them.
For example, fk15k contains an entity with ID /m/02nzb8 , which will now be imported as gqs:/m/02nzb8, similarly, relation -/soccer/football_team/current_roster./sports/sports_team_roster/position will be imported as gqs:-/soccer/football_team/current_roster./sports/sports_team_roster/position.