PMC:7210464 / 21076-21146 JSONTXT

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    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T144","span":{"begin":0,"end":70},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Population density, per km2 288 428.881 374.138 9.049 327.115 3444.092"}