Hello
I'm observing a strange ( ?) behaviour on the dbpedia Sparql-endpoint, and I
wonder whether this is due to the underlying data or to the Sparql-endpoint
itself (virtuouso). Following the dumps of dbpedia 2014, the data seems OK
though.
The query
select distinct * {
dbpedia:Cicero <http://dbpedia.org/ontology/birthDate> ?o
}
Returns -043-12-07 (7th of July 43 BC) which is what I expected. However
select distinct * {
?s <http://dbpedia.org/ontology/birthDate> ?o
filter(?o < "-43-01-01"^^xsd:date)
} limit 100
List all sorts of things (mainly persons though, but none with a birthdate
before 43 BC). Browsing the dbpedia dumps I found several person born before 43
BC.
Does anybody know where this error comes from ?
Best regards
Johannes
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