PMC:7126544 / 5175-5222
Annnotations
LitCovid-sentences
| Id | Subject | Object | Predicate | Lexical cue |
|---|---|---|---|---|
| T44 | 0-47 | Sentence | denotes | It is not known for how long they have existed. |
| Id | Subject | Object | Predicate | Lexical cue |
|---|---|---|---|---|
| T44 | 0-47 | Sentence | denotes | It is not known for how long they have existed. |