PMC:314463 / 6592-6607 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T1800","span":{"begin":2,"end":10},"obj":"NN"},{"id":"T1802","span":{"begin":11,"end":13},"obj":"IN"}],"relations":[{"id":"R1058","pred":"prep","subj":"T1802","obj":"T1800"}],"text":"p boundary at t"}