He was the son of theologian Theodosius Harnack and the brother of theologian Adolf von Harnack , mathematician Carl Gustav Axel Harnack and literary historian Otto Harnack . Harnack , Gottfried Rudolf Otto Hessian Biography
Head entity: otto harnack Q119170 25 26
Tail entity: theodosius harnack Q553115 6 7
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Inverse relation (tail \u2192 head): P40