Examples of using It is the oldest in English and their translations into Polish
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Colloquial
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Official
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Medicine
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Ecclesiastic
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Ecclesiastic
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Financial
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Official/political
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Programming
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Computer
It is the oldest independent award in Polish literature.
It is the oldest continually operating radio station in the United States.
It is the oldest diocesan pilgrimage.
It is the oldest of all the surviving mosques of the capital.
It is the oldest permanent European settlement in the continental United States.
It is the oldest and most commonearthing system.
In fact, it is the oldest still standing mission.
It is the oldest swimming pool in Iceland,
It is the oldest Roman settlement on the Iberian Peninsula.
By the way, it is the oldest preserved city's privilege of minting coins in Moravia.
It is the oldest surviving Rangtheater(theater with boxless tiers) in Europe.
It is the oldest complete fort still standing in sub-Saharan Africa.
It is the oldest preserved in Silesia figure of John of Nepomuk.
It is the oldest of its kind in the world.
It is the oldest modern national park in Serbia.
It is the oldest independent Roman Catholic journal of opinion in the United States.
It is the oldest Christian church built in Singapore.
It is the oldest continuing Jewish organization in the city.
It is the oldest such scheme in the world.
Founded in 1897, it is the oldest of its type in the world.