PMC:7796329 / 2341-2557 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T21","span":{"begin":90,"end":102},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"nearly 90% of Americans think that Lee Harvey Oswald did not act alone in killing John F. Kennedy [4]. Stempel et al. [5] reported that nearly one-third of American respondents accepted the theory that federal offici"}