An inefficient approach to identifying intersection membership

intersection.rq

construct { ?x a ?i }
where { ?i owl:intersectionOf ?l .
        ?l rdf:rest*/rdf:first ?c .
        ?x a ?c
        MINUS {
          ?l rdf:rest*/rdf:first ?d .
          ?l rdf:rest*/rdf:first ?d2 .
          FILTER ( ?d != ?d2 )
          ?x a ?d MINUS { ?x a ?d2 }
        } }