PMC:7675688 / 33-197 2 Projects
Annnotations
| Id | Subject | Object | Predicate | Lexical cue |
|---|---|---|---|---|
| T2 | 15-23 | Sentence | denotes | Abstract |
| T3 | 25-35 | Sentence | denotes | Background |
| T4 | 36-109 | Sentence | denotes | An outbreak of coronavirus disease 2019 (Covid-19) occurred on the U.S.S. |