PMC:7796058 / 21971-22146 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T134","span":{"begin":0,"end":175},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"As shown in Figure 3, the nodes of the IndoorGML graph in this paper are considered the smallest organizational or structural units for the building and are called Cells [19]."}