Random triples
| Subject | Object |
|---|---|
| gptkb:Zwicky_catalogue | northern sky |
| gptkb:ESO-LV_catalogue | southern sky |
| gptkb:Cape_Photographic_Durchmusterung | southern sky |
| gptkb:Zwicky_Catalogue | northern sky |
| gptkb:Cape_Zone_Catalogue | southern hemisphere |
| gptkb:Cape_Photographic_Durchmusterung_catalogue | southern sky |
| gptkb:Cape_Photographic_Catalogue | southern hemisphere |
| gptkb:Uhuru_X-ray_catalog | whole sky |