&hint3=I was in the form of a traditional Roman public assembly hall&
&hint4=I was known by the Trajan's family name, the Ulpia&
&choices=Pantheon, plan and cross-section;Column of Trajan, detail of Roman army crossing the Danube;Forum of Trajan;The citadel and palace complex of Sargon II;Pantheon, exterior;Column of Trajan&