PMC:7036705 / 1500-1576 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T13","span":{"begin":0,"end":76},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Questions have been raised even on the opportunity to keep the schools open."}