| Clue | Source | Date |
|---|---|---|
| Affirmed the truth of | Universal | 09 Jan 2019 |
| Affirmed the truth of | ||
| Certified | The Washington Post | 18 Dec 2016 |
| Vouched for | Newsday | 25 Jun 2016 |
| Corroborated | New York Times | 11 Apr 2015 |
| Corroborated | ||
| Substantiated | ||
| Gave evidence for | ||
| Affirmed as true | ||
| Vouched for | ||
| Certified | ||
| Certified | ||
| Gave evidence for |