PMC:7784828 / 103-121 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T2","span":{"begin":13,"end":15},"obj":"Sentence"},{"id":"T3","span":{"begin":16,"end":18},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"h challenges\nK. G."}