PMC:7001240 / 7703-7924 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T37","span":{"begin":0,"end":1},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T38","span":{"begin":7,"end":8},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"a When a city is served by several airports, these airports are considered as one entity. For each country, only the four most important cities in terms of agglomeration of airports and passenger traffic are represented.\n"}

{"project":"LitCovid-sentences","denotations":[{"id":"T63","span":{"begin":0,"end":89},"obj":"Sentence"},{"id":"T64","span":{"begin":90,"end":220},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"a When a city is served by several airports, these airports are considered as one entity. For each country, only the four most important cities in terms of agglomeration of airports and passenger traffic are represented.\n"}