i need away to write rdf triples with Time attributes and make sparql query to get the time -

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i have triples: fadi eat apple. (subject = fadi, predicate = eat, object = apple). , have time when fadi eat apple, its: 00:00:13 , have time when fadi ate apple, its: 00:00:50

how can write rdf-triples file times attributes? , how can starttime , endtime sparql query request rdf file?

i tried write rdf this:

<?xml version="1.0" encoding="utf-8"?> <!doctype rdf:rdf [<!entity rdf 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'> <!entity rdfs 'http://www.w3.org/2000/01/rdf-schema#'> <!entity xsd 'http://www.w3.org/2001/xmlschema#'>]> <rdf:rdf xmlns:xsd="http://www.w3.org/2001/xmlschema#"           xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"          xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"      xmlns:dnr="http://www.dotnetrdf.org/configuration#"          xml:base="http://www.example.org/"     xmlns:starttime="http://example.org/starttime#"     xmlns:endtime="http://example.org/endtime#">  <rdf:description rdf:about="fadi">         <ns:be xmlns:ns="http://example.org/" xmlns:starttime="00:00:13" xmlns:endtime="00:00:16">may</ns:be>       </rdf:description> </rdf:rdf>

but c# gaves me: invalid uri: uri scheme not valid.

and tried this: 

<?xml version="1.0" encoding="utf-8"?> <!doctype rdf:rdf [<!entity rdf 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'> <!entity rdfs 'http://www.w3.org/2000/01/rdf-schema#'> <!entity xsd 'http://www.w3.org/2001/xmlschema#'>]> <rdf:rdf xmlns:xsd="http://www.w3.org/2001/xmlschema#"           xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"          xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"      xmlns:dnr="http://www.dotnetrdf.org/configuration#"          xml:base="http://www.example.org/">  <rdf:description rdf:about="fadi">         <ns:be xmlns:ns="http://example.org/" xml:starttime="00:00:13" xml:endtime="00:00:16">may</ns:be>       </rdf:description> </rdf:rdf>

but can't times sparql.

how can write rdf?!!

you shouldn't using xmlns try , define attributes, xmlns reserved prefix in xml used defining namespaces.

once have defined own namespace can use attributes e.g.

<?xml version="1.0" encoding="utf-8"?> <!doctype rdf:rdf [<!entity rdf 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'> <!entity rdfs 'http://www.w3.org/2000/01/rdf-schema#'> <!entity xsd 'http://www.w3.org/2001/xmlschema#'>]> <rdf:rdf xmlns:xsd="http://www.w3.org/2001/xmlschema#"           xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"          xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"          xmlns:ns="http://yourdomain.com/namespace#"          xml:base="http://www.example.org/">    <rdf:description rdf:about="fadi" ns:starttime="00:00:13" ns:endtime="00:00:16">     <ns:be>may</ns:be>   </rdf:description> </rdf:rdf>

here defined namespace in root element so:

xmlns:ns="http://yourdomain.com/namespace#"

obviously should change namespace uri appropriate you.

then can use newly defined ns prefix refer terms in namespace e.g.

ns:starttime="00:00:13"

suggestion

however still don't think going give data intending create. suggest stop trying write rdf/xml hand questions imply doing.

instead recommend learning human readable serialization turtle since easier understand. more triple centric rdf/xml understand better rdf triples expressing , make easier understand how write sparql queries return data want.


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