Random triples
| Subject | Object |
|---|---|
| gptkb:Mary_Celeste | unsolved |
| gptkb:Mayerling_murder-suicide | controversial circumstances |
| gptkb:Fast_Radio_Bursts | unexplained phenomenon |
| gptkb:Croatoan | unsolved |
| gptkb:Man_in_the_Iron_Mask | identity unknown |
| gptkb:Le_Masque_de_fer | identity unknown |
| gptkb:L'Homme_au_masque_de_fer | identity unknown |
| gptkb:Princes_in_the_Tower | disappearance |
| gptkb:Voynich_manuscript | unsolved |