Slow query when getting rdf:type

[Mikael Pesonen]

Hi, I have trouble understanding why the first query is slow and second 
one is fast. Using Jena Fuseki 3.4.0.

So I want to get all resources that reference <some resource>, and their 
types:

SELECT * WHERE
{
        GRAPH ?g
        {
                ?s ?p <some resource> .
                ?s a ?type
        }
}

SELECT * WHERE
{
        GRAPH ?g
        {
                ?s ?p <some resource> .
                ?s ?p2 ?o2
        }
}


First one takes 5 seconds which is too slow for our application. Can it 
be rearranged somehow to make fast? Sorry if this is not a correct forum 
for this.

Thanks!

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