Ob–Irtysh river system
E676785
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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Ob–Irtysh basin | 1 |
| Ob–Irtysh river system canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7606568 — 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: Ob–Irtysh river system Context triple: [Irtysh River, riverSystem, Ob–Irtysh river system]
-
A.
Irtysh River
The Irtysh River is a major river in Central Asia and Western Siberia that flows through China, Kazakhstan, and Russia before joining the Ob 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.
Bolshaya Almatinka River
The Bolshaya Almatinka River is a mountain river in southeastern Kazakhstan that flows through the city of Almaty, supplying it with water and shaping its surrounding landscapes.
-
D.
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.
-
E.
Bolshaya Kokshaga River
The Bolshaya Kokshaga River is a significant waterway in central Russia that flows through the Mari El Republic before emptying into the Volga River.
- 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: Ob–Irtysh river system Target entity description: 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.
-
A.
Irtysh River
The Irtysh River is a major river in Central Asia and Western Siberia that flows through China, Kazakhstan, and Russia before joining the Ob 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.
Bolshaya Almatinka River
The Bolshaya Almatinka River is a mountain river in southeastern Kazakhstan that flows through the city of Almaty, supplying it with water and shaping its surrounding landscapes.
-
D.
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.
-
E.
Bolshaya Kokshaga River
The Bolshaya Kokshaga River is a significant waterway in central Russia that flows through the Mari El Republic before emptying into the Volga River.
- F. None of above. chosen
Statements (67)
| Predicate | Object |
|---|---|
| instanceOf |
drainage basin
ⓘ
hydrological system ⓘ river system ⓘ |
| continent | Asia ⓘ |
| drainageBasinArea |
about 1,150,000 square miles
ⓘ
about 2,990,000 square kilometres ⓘ about 2.99 million square kilometres ⓘ |
| drainageBasinCountries |
Albania
NERFINISHED
ⓘ
Armenia NERFINISHED ⓘ Austria NERFINISHED ⓘ Azerbaijan NERFINISHED ⓘ Bahrain NERFINISHED ⓘ Belarus NERFINISHED ⓘ Bosnia and Herzegovina NERFINISHED ⓘ Bulgaria NERFINISHED ⓘ China NERFINISHED ⓘ Croatia NERFINISHED ⓘ Czech Republic NERFINISHED ⓘ Estonia NERFINISHED ⓘ Finland NERFINISHED ⓘ Georgia NERFINISHED ⓘ Germany NERFINISHED ⓘ Greece NERFINISHED ⓘ Hungary NERFINISHED ⓘ Iran NERFINISHED ⓘ Iraq NERFINISHED ⓘ Israel NERFINISHED ⓘ Italy NERFINISHED ⓘ Jordan NERFINISHED ⓘ Kazakhstan NERFINISHED ⓘ Kuwait NERFINISHED ⓘ Kyrgyzstan NERFINISHED ⓘ Latvia NERFINISHED ⓘ Lebanon NERFINISHED ⓘ Lithuania NERFINISHED ⓘ Macedonia NERFINISHED ⓘ Moldova NERFINISHED ⓘ Mongolia NERFINISHED ⓘ Montenegro NERFINISHED ⓘ Norway NERFINISHED ⓘ Oman NERFINISHED ⓘ Poland NERFINISHED ⓘ Qatar NERFINISHED ⓘ Romania NERFINISHED ⓘ Russia NERFINISHED ⓘ Saudi Arabia NERFINISHED ⓘ Serbia NERFINISHED ⓘ Slovakia NERFINISHED ⓘ Slovenia NERFINISHED ⓘ Sweden NERFINISHED ⓘ Switzerland NERFINISHED ⓘ Syria NERFINISHED ⓘ Turkey NERFINISHED ⓘ Ukraine NERFINISHED ⓘ United Arab Emirates NERFINISHED ⓘ Yemen NERFINISHED ⓘ |
| drainsInto | Arctic Ocean NERFINISHED ⓘ |
| formedByConfluenceOf |
Irtysh River
NERFINISHED
ⓘ
Ob River NERFINISHED ⓘ |
| locatedIn |
China
ⓘ
Kazakhstan NERFINISHED ⓘ Russia ⓘ Western Siberia NERFINISHED ⓘ |
| majorRiver | Ob River NERFINISHED ⓘ |
| majorTributary | Irtysh River NERFINISHED ⓘ |
| mouth | Kara Sea NERFINISHED ⓘ |
| partOf | Arctic Ocean drainage basin ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Ob–Irtysh river system Description of subject: 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.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Ob–Irtysh basin