PubMed:32052373 / 1376-1383
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T193","span":{"begin":0,"end":7},"obj":"VBD"}],"text":"learned"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok217","span":{"begin":0,"end":7},"obj":"VBD"},{"id":"event6","span":{"begin":0,"end":7},"obj":"OCCURRENCE"}],"text":"learned"}