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    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T12","span":{"begin":3,"end":68},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"s. 208 (79.7%) used surgical masks and 53 (20.3%) used filter masks. Of all those surveyed, 158 (51.6%) present"}