How to generate a random sample of data in sparql?

@ryleigh 

In SPARQL, you can generate a random sample of data by using the RAND() function along with the ORDER BY and LIMIT clauses. Here's an example query that demonstrates how to generate a random sample of data:

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SELECT ?subject ?predicate ?object
WHERE {
  ?subject ?predicate ?object
}
ORDER BY RAND()
LIMIT 10

In this query, ORDER BY RAND() randomly orders the results, and LIMIT 10 limits the results to a sample of 10 rows. You can adjust the LIMIT value to generate a larger or smaller random sample of data.