]> X Y http://example.org/family#isChildOf X Y Y http://example.org/family#Male http://example.org/family#isFatherOf Y X http://example.org/family#isChildOf http://example.org/family#Adrian http://example.org/family#Uwe http://example.org/family#Adrian http://example.org/family#Male http://example.org/family#Uwe http://example.org/family#Male