PMC:7796344 / 102-189 JSONTXT

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    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T3","span":{"begin":2,"end":13},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"t\nBackground: Annually, approximately 10 million pilgrims travel to the Kingdom of Saud"}