For instance, I got all cat instance by (?c rdf:type eg:cat) firstly. So, how to get the oldest cat according to the property :has_age?
Thank you!
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Stanislav Kralin
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I'm not sure if this is possible with the `greaterThan` and `noValue` [primitives](https://jena.apache.org/documentation/inference/#RULEbuiltins), but this is obviously possible using SPARQL. – Stanislav Kralin Mar 29 '18 at 19:02