Disambiguation evidence for Porta Nigra via surface form

"well-preserved Roman city gate (Porta Nigra)"

Triples (1)

Triples where some other subject referred to this entity as "well-preserved Roman city gate (Porta Nigra)".

Roman Monuments, Cathedral of St Peter and Church of Our Lady in Trier → notableFeature →
"well-preserved Roman city gate (Porta Nigra)"
↳ resolves to Porta Nigra
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linked to: UNESCO World Heritage Site (Roman Monuments, Cathedral of St Peter and Church of Our Lady in Trier)