PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> 
PREFIX ex: <http://keg.vse.cz/patomat/function#>
SELECT ?c1 ?c2 ?p ?c3 ?p3
WHERE {
?c1 rdfs:subClassOf ?p.
?c2 rdfs:subClassOf ?p.
?c3 rdfs:subClassOf ?p3.
FILTER 
(
?c1!=?c2 &&
?P != ?P3 &&
!ex:headNounEquality(?c3,?p3) &&
!ex:headNounEquality(?p,?p3) &&
ex:headNounEquality(?c1,?c2) &&
ex:headNounEquality(?c1,?c3) &&
ex:headNounEquality(?c1,?p) &&
)
}