How to delete using sparql?

@denis 

To delete specific data using SPARQL, you can use the DELETE query in your SPARQL endpoint. Here is an example of a SPARQL DELETE query that removes a specific triple from the graph:

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DELETE DATA {
  <subject> <predicate> <object> .
}

Replace <subject>, <predicate>, and <object> with the actual URIs or literals that you want to delete from the graph.

Alternatively, you can use the DELETE WHERE clause to delete data that matches a specific pattern. Here is an example:

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DELETE {
  ?s ?p ?o .
}
WHERE {
  ?s ?p ?o .
  FILTER(?s = <subject>)
}

In this query, the DELETE WHERE clause will delete all triples where the subject is equal to the specified URI <subject>.

Make sure to run these queries on a SPARQL endpoint that supports updates and has the necessary permissions to modify the data. Additionally, be cautious when deleting data as it cannot be easily undone.