PubMed:32240670 / 1851-1859 JSONTXT

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    LitCovid-TimeML

    {"project":"LitCovid-TimeML","denotations":[{"id":"tok454","span":{"begin":0,"end":8},"obj":"VBN"},{"id":"event1","span":{"begin":0,"end":8},"obj":"OCCURRENCE"}],"text":"observed"}