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    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T11","span":{"begin":18,"end":29},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":" as illustration.\nObjectives: The aim of this study was to evaluate the perfo"}