PMC:7026896 / 15950-16146 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T93","span":{"begin":0,"end":196},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"We do not know whether they will be effective; indeed we do not know how we will determine if they have been effective – what end point can we measure that will provide an answer to that question?"}