Disambiguation evidence for Uruk period via surface form

"Uruk period (late phase of Sumerian city-states)"

Triples (1)

Triples where some other subject referred to this entity as "Uruk period (late phase of Sumerian city-states)".

Utu-hegal of Uruk → era →
"Uruk period (late phase of Sumerian city-states)"
↳ resolves to Uruk period
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