PMC:7796058 / 33031-33151 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T217","span":{"begin":0,"end":120},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Proximity tracing map extracted from beacons which includes a trajectory map of traced people on an OGC IndoorGML graph."}