SPARQL to get all triples in an ‘assertion’ named graph representing data set

Database: 
Statement: 
SPARQL to get all triples in an ‘assertion’ named graph representing $dataset$ data set e.g. (e.g.,HGVRS17).
A limit of results per page $number$ (e.g.100)
Query: 
select * from named <http://purl.org/gwas/np/??dataset#as> where { graph ?g {?s ?p ?o} } limit ??number
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