"Demetrius I (Greek: Δημήτριος Α`, 185 – June 150 BC, reigned September/October 161 – June 150 BC), surnamed Soter (Greek: Σωτήρ - "Savior"), was a ruler of the Hellenistic Seleucid Empire." - (en.wikipedia.org 11.08.2021)
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(The left column lists the relations of this actor to objects in the right column. In the middle you find other actors in relation to the same objects.)