PMC:7205724 / 7768-7791 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T1307","span":{"begin":1,"end":3},"obj":"TO"},{"id":"T1308","span":{"begin":4,"end":8},"obj":"NN"},{"id":"T1309","span":{"begin":8,"end":9},"obj":"-RRB-"},{"id":"T1310","span":{"begin":10,"end":23},"obj":"NNS"}],"relations":[{"id":"R1300","pred":"arg2Of","subj":"T1308","obj":"T1307"}],"text":" to N510) substitutions"}