Hi Tim,
the Turtle that Jena accepts looks like
:Uncle
a owl:Class ;
rdfs:subClassOf :Person ;
owl:equivalentClass
[ a owl:Restriction ;
owl:onProperty
[ owl:inverseOf :hasBrother
] ;
owl:someValuesFrom
[ owl:onProperty
[ owl:inverseOf :hasParent
] ;
owl:someValuesFrom :Person
]
] .
so your example had a few too many dots and was missing a closing
bracket at the end. I haven't looked at the Turtle spec whether the dots
should be allowed or not - if you think this is a bug please follow up
on the Jena mailing list.
It also lacked an rdf:type owl:Restriction triple.
This is displayed by TBC in Manchester Syntax as
inv(hasBrother) some (inv(hasParent) some Person)
However the current TBC form widget doesn't seem to like this (unusual)
construct so that editing the source code is your safest option at this
time.
... or use SPIN which is arguably a more natural and more flexible way
of modeling this scenario.
HTH
Holger
On 1/11/2013 7:34, Tim Harsch wrote:
Hi all,
After reading the TBC getting started guide and some exploration of
the restriction editor I find myself having difficulty creating a
certain restriction class.
First, my modeling problem and a relevant question took place here:
https://answers.semanticweb.com/questions/20300/model-uncle-using-class-restrictions
In that thread I was advised to try this solution:
|:Uncle owl:equivalentClass [
owl:onProperty [ owl:inverseOf :hasBrother ]; # or :hasBrother if it's
asserted to be symmetric
owl:someValuesFrom [
owl:onProperty [ owl:inverseOf :hasParent ]; # or :hasChild if it's
defined
owl:someValuesFrom :Person
] .|
I first tried to do this using TBC form editor but could not figure it
out. Question 1: how do I model this using the form editor?
I then tried a work around of just adding the turtle directly and then
opening the file to see what TBC would do with the form for Uncle. But
I get:
Operation failed.
Reason:
com.hp.hpl.jena.shared.JenaException: org.openjena.riot.RiotException:
[line: 51, col: 47] Triples not terminated properly in []-list
The Turtle file is here:
https://dl.dropbox.com/u/4464286/ForTopQuadrant/uncleProblem.ttl
So, Question 2: Why is that turtle throwing an exception? It looks
valid to me.
Thanks for any help,
Tim
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