| Clue | Source | Date |
|---|---|---|
| Sentence that often appears in the first paragraph of an essay | New York Times | 30 Sep 2024 |
| Heart of an academic paper | New York Times | 26 Mar 2021 |
| Center of a defense | New York Times | 09 Jan 2016 |
| Center of a defense | ||
| Doctoral candidate's starting point |