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When I tried to load Wikidata into the current version of Virtuoso Open Source I got the following error just after starting:
08:50:42 PL LOG: File /home/local/wikidata/split/wikidata-part-005.ttl…
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**Edit**: see an update to this proposal [below](https://github.com/w3c/rdf-star-wg/issues/130#issuecomment-2425965785), changing annotation properties to `rdf:onSubject`, `rdf:onPredicate`and `rdf:o…
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The ePO ontology produces SHACL with references to rdf:plainliteral, that is either a `xsd:string` or `rdf:langString` like in this example
```turtle
core-shape:org-Organization-epo-hasLegalFormTy…
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Json-LD support rdf:langString, and the TD utilizes this in the attributes title, titles, description and descriptions. However, providing this type in LinkML using the following:
```
types:
Mult…
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Hello All,
So I'm trying to use the null function to check the non-existence of a json entity in my data , but it is not behaving correctly:
My data is as follows:
`[{"id":"0","labels":["Studen…
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Background: https://lists.w3.org/Archives/Public/spec-prod/2020AprJun/0006.html
In the past, the only way to get data related to the specifications was [tr.rdf](https://www.w3.org/2002/01/tr-automa…
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The query
```sparql
PREFIX ome_core:
select distinct ?tp where {
?ds a ome_core:Dataset .
?ds a ?tp .
}
limit 10
```
returns
| tp …
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cc @tpluscode @amivanoff
https://www.npmjs.com/search?q=shacl has a lot of useful tools.
Below is a rough list, but we need to find the git repos, and add all attributes needed by "awesome.
Add ca…
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when using the recent `sparnatural.js` (https://github.com/sparna-git/Sparnatural/releases/tag/9.5.2) and `sparnatural.js.map` all `rdf:type` predicates are gone, causing a timeout (see https://github…
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### Checked for duplicates
Yes - I've already checked
### 🐛 Describe the bug
When I did lddtool -h, it returned
usage: LDDTool [-h] [-p] [-l] [-d] [-D] [-J] [-m] [-M] [-n] [-N] [-1] [-T]
…