oxigraph/testsuite/oxigraph-tests/sparql-optimization/bgp_join_reordering_output.rq

PREFIX ex: <http://example.com/>

SELECT ?s ?o WHERE {
    ?s a ex:C .
    ?s ex:p1 ?m1 .
    ?s ex:p1prime ?m1 .
    ?s ex:p1 ?m2 .
    ?m2 ex:p2 ?o .
    ?m1 ex:p2 ?o .
}