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KIZI / sparqlab

Lab for exercising SPARQL
Eclipse Public License 1.0
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Task wording vs. solution mismatch in exercise:dataset-equals-named-graph? #2

Closed svatek closed 7 years ago

svatek commented 7 years ago

The wording can be read as "IRI of any dataset ... with IRI of ANY graph in the store" ("zdali se IRI některých datasetů (instancí qb:DataSet) překrývají s IRI pojmenovaných grafů") However, ASK WHERE {GRAPH ?r {[] ?p [].} {?r a qb:Dataset } } is labeled as incorrect, and the proposed solution presumes that the dataset IRI must collide with the IRI of THE graph where it occurs. Did I miss something? Or should it be changed to "... s IRI jejich pojmenovaných grafů"?

jindrichmynarz commented 7 years ago

You're right. The wording of this exercise is not as precise as it could be. It was meant to ask for instances of qb:DataSet in the named graphs sharing the same IRI. As you point out, your query has a different meaning, so it's evaluated as incorrect. I'll fix this by rephrasing the exercise's description.