| Fact | The ... |
| The ... is the ONLY animal who's evidence is admissible in an American court | |
| If there was a sea big enough, ... would be the ONLY planet that would float | |
| ... is the ONLY British county to have two coasts | |
| ... is the ONLY US state that permits residents to vote from space | |
| The ONLY dog in a Shakespeare play was ... in The two gentlemen of Verona | |
| | Fact | The ... |
| The ONLY planet to rotate clockwise is ... | |
| ... are the ONLY primates other than humans that can have blue eyes | |
| ... is the ONLY natural food that doesn't spoil | |
| ... is the ONLY rock humans can eat | |
| Monday is the ONLY day of the week with an anagram: ... | |
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