PMC:7786642 / 1111-1213 JSONTXT

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    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T14","span":{"begin":0,"end":102},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"We retrieved averaged NO2 and PM2.5 concentration during 2014–2018 from the Pollution Climate Mapping."}