Create dinamically SPARQL query and work with the result as owlready object

Posted by Hamico on Mar 01, 2019; 3:33pm
URL: http://owlready.306.s1.nabble.com/Create-dinamically-SPARQL-query-and-work-with-the-result-as-owlready-object-tp863.html

Hi guys,
I have a question that troubles me. I want to have an element in input (object) to the SPARQL query so that I have as result a subject if I put the predicate static and the object dinamically.

Query = ’’’PREFIX...SELECT ?owner WHERE {?owner :has_bought :’’’ +name_car+”}”

Its result with reasoner is an empty field. Why? Can you write a simple example of dinamical creation of SPARQL query?

Then I want to have an owlready object from the result of SPARQL query. I have seen the method .query_owlready() on the answer of another question:

http://owlready.8326.n8.nabble.com/No-results-when-running-the-same-SPARQL-query-in-Owlready-compared-to-Protege-td528.html#a546

How does this method work? Can you write an example of the method .query_owlready()?

Thanks to all for the support. I hope my question to have a solution and to be useful for others who have the same problems.
I wish a good weekend to all.


Best regards,
Your friend Hamico