PMC:7795931 / 12615-12814 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T74","span":{"begin":29,"end":131},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"h theory and network theory. A graph (or network) consists of a number of vertices (nodes) and the edges (links) that connect them. The number of edges (links) connected to each vertex (node) is the "}