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[protege-discussion] SPARQL ASK

Timothy Redmond tredmond at
Fri Feb 10 09:24:35 PST 2012

I don't know the answer to this question.  But we are using the sparql 
query implementation provided by (version 2.4.0).

But I wonder if this is something about the types of queries that we are 
accepting and not about the ASK keyword.  Is it possible to nest the ASK 
keyword inside a tuple query?


On 2/10/12 6:44 AM, Alessandro Oltramari wrote:
> Hi all,
> I've just noticed a problem with the SPARQL tab in Protege 4.2.0, 
> Build 256.
> When I use an ASK form to query my ontology, I get this message:
> "Error 316 Logged at Fri Feb 10 09:39:34 EST 2012
> SparqlReasonerException: java.lang.IllegalArgumentException: query is 
> not a tuple query"
> I tried different ASK queries, even the simplest ones.
> On the contrary, SELECT works well, even when constraints keywords 
> like FILTER and OPTIONAL are added.
> Do you know if ASK queries are supported or not not by the current 
> version of the SPARQL tab?
> Thanks for answer,
> Alessandro
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