PubMed:32174267 / 94-102
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T14","span":{"begin":1,"end":8},"obj":"VBN"}],"text":" learned"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok15","span":{"begin":1,"end":8},"obj":"VBN"},{"id":"event11","span":{"begin":1,"end":8},"obj":"OCCURRENCE"}],"text":" learned"}