PMC:7796058 / 42354-42525 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T293","span":{"begin":0,"end":171},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"A demo scenario of cleaning person is presented in Supplementary Materials and the trajectories of both building cleaners and visitors is shown in Supplementary Materials."}