Angara–Yenisei river system

E1162734 UNEXPLORED

The Angara–Yenisei river system is a major Siberian waterway formed by the Angara and Yenisei rivers, draining a vast area of central Asia into the Arctic Ocean.

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All labels observed (5)

Label	Occurrences
Angara–Yenisei basin	3
Angara River basin	2
Angara–Yenisei river system canonical	1
Yenisei–Angara basin	1
Yenisei–Angara–Selenge river system	1

How this entity was disambiguated

This entity first appeared as the object of triple T14090764 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Angara–Yenisei river system
Context triple: [Snezhnaya River, hasHydrologicalSystem, Angara–Yenisei river system]

A. Angara River
The Angara River is a major river in Siberia that flows northward from Lake Baikal through Irkutsk Oblast before joining the Yenisei River.
B. Upper Angara River
The Upper Angara River is a major Siberian river in Russia that flows through Buryatia and Zabaykalsky Krai before emptying into Lake Baikal.
C. Yenisei River
The Yenisei River is one of the longest rivers in Asia, flowing northward through Siberia to the Arctic Ocean and forming a major part of the central Eurasian river system.
D. Lena River basin
The Lena River basin is a vast drainage area in eastern Siberia that collects the waters of the Lena River and its tributaries before they flow northward into the Arctic Ocean.
E. Ob–Irtysh river system
The Ob–Irtysh river system is a major river network in western Siberia, formed by the Ob River and its principal tributary the Irtysh, and is one of the largest drainage systems in the world.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Angara–Yenisei river system
Target entity description: The Angara–Yenisei river system is a major Siberian waterway formed by the Angara and Yenisei rivers, draining a vast area of central Asia into the Arctic Ocean.

A. Angara River
The Angara River is a major river in Siberia that flows northward from Lake Baikal through Irkutsk Oblast before joining the Yenisei River.
B. Upper Angara River
The Upper Angara River is a major Siberian river in Russia that flows through Buryatia and Zabaykalsky Krai before emptying into Lake Baikal.
C. Yenisei River
The Yenisei River is one of the longest rivers in Asia, flowing northward through Siberia to the Arctic Ocean and forming a major part of the central Eurasian river system.
D. Lena River basin
The Lena River basin is a vast drainage area in eastern Siberia that collects the waters of the Lena River and its tributaries before they flow northward into the Arctic Ocean.
E. Ob–Irtysh river system
The Ob–Irtysh river system is a major river network in western Siberia, formed by the Ob River and its principal tributary the Irtysh, and is one of the largest drainage systems in the world.
F. None of above. chosen