| Clue | Source | Date |
|---|---|---|
| One; each (2) | ||
| "A riddle wrapped in ___ enigma" (2) | ||
| Chemical symbol for actinide (2) | ||
| Article used before a word starting with a vowel (2) | ||
| Article | Canadiana | 30 Aug 2021 |
| Article | Canadiana | 04 Nov 2019 |
| ___ Inconvenient Truth | Canadiana | 25 Jun 2018 |
| 'This is outrage!' | Eugene Sheffer | 01 Dec 2016 |
| One or any |