PMC:7796329 / 2295-2430 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T20","span":{"begin":0,"end":135},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"In the U.S., national opinion polls show that nearly 90% of Americans think that Lee Harvey Oswald did not act alone in killing John F."}