PMC:7143707 / 70-92 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T2","span":{"begin":4,"end":19},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"an\n\n1 Introduction\nIn"}