Hi,
I spotted a small typo in the first query example in 11.4.1 bound.
The example reads:
PREFIX foaf: <
http://xmlns.com/foaf/0.1/>
PREFIX dc: <
http://purl.org/dc/elements/1.1/>
PREFIX xsd: <
http://www.w3.org/2001/XMLSchema#>
SELECT ?name
WHERE { ?x foaf:givenName ?givenName .
OPTIONAL { ?x dc:date ?date } .
FILTER ( bound(?date) ) }
It should be:
PREFIX foaf: <
http://xmlns.com/foaf/0.1/>
PREFIX dc: <
http://purl.org/dc/elements/1.1/>
PREFIX xsd: <
http://www.w3.org/2001/XMLSchema#>
SELECT ?name
WHERE { ?x foaf:givenName ?name .
OPTIONAL { ?x dc:date ?date } .
FILTER ( bound(?date) ) }
Jérôme Mainka
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