PMC:314463 / 487-494 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T248","span":{"begin":0,"end":3},"obj":"NN"},{"id":"T249","span":{"begin":4,"end":5},"obj":"-LRB-"},{"id":"T250","span":{"begin":5,"end":7},"obj":"NN"}],"text":"tan (at"}