Hi,
I got the following problem. If I use the search field of the main page searching for "Brian O'Nolan" I get a result. But if I use the following piece of code in the query service no result shows up.
SELECT ?_Geburtsdatum WHERE { ?s ?label "Brian O'Nolan". OPTIONAL { ?s wdt:P569 ?_Geburtsdatum. } }
What I'm doing wrong? Is it a problem of coding the apostrophe? If yes, how do I have to code it?
Best regards Detlef