PubMed:32052466 / 269-271
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T44","span":{"begin":0,"end":2},"obj":"DT"}],"text":"an"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok50","span":{"begin":0,"end":2},"obj":"DT"},{"id":"lookup7","span":{"begin":0,"end":2},"obj":"country_code"}],"text":"an"}