PMC:7454258 / 103-164 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T2","span":{"begin":23,"end":31},"obj":"Sentence"},{"id":"T3","span":{"begin":32,"end":40},"obj":"Sentence"},{"id":"T4","span":{"begin":42,"end":52},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":" effort and authority\n\nAbstract\nABSTRACT\n\nBackground\nThe US f"}