Dujiangyan Irrigation System
E211985
Dujiangyan Irrigation System is an ancient Chinese water-management project built around the 3rd century BCE that still functions today, renowned for its innovative design that controls flooding and irrigates vast areas without using a traditional dam.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Dujiangyan Irrigation System canonical | 6 |
| Dujiangyan | 2 |
| 都江堰 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1909851 — 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: Dujiangyan Irrigation System Context triple: [Sichuan Province, contains, Dujiangyan Irrigation System]
-
A.
Grand Canal of China
The Grand Canal of China is an ancient, extensive man-made waterway system that historically linked northern and southern China, facilitating trade, transport, and economic integration for over a millennium.
-
B.
Grand Canal
The Grand Canal is a major man-made waterway in Ireland that historically linked Dublin to the River Shannon, serving as an important route for transport and trade.
-
C.
Grand Canal
The Grand Canal is the main S-shaped waterway in Venice, Italy, lined with historic palaces and serving as the city’s primary thoroughfare for boats and vaporetti.
-
D.
Lahontan Valley irrigation district
The Lahontan Valley irrigation district is an agricultural water management area in western Nevada that supplies and regulates irrigation for farms and ranches around Fallon and the surrounding Lahontan Valley.
-
E.
Gezhouba Dam
Gezhouba Dam is a large hydroelectric gravity dam in Yichang, Hubei, China, notable as the first major dam built on the Yangtze River and an important source of power generation and river navigation control.
- 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: Dujiangyan Irrigation System Target entity description: Dujiangyan Irrigation System is an ancient Chinese water-management project built around the 3rd century BCE that still functions today, renowned for its innovative design that controls flooding and irrigates vast areas without using a traditional dam.
-
A.
Grand Canal of China
The Grand Canal of China is an ancient, extensive man-made waterway system that historically linked northern and southern China, facilitating trade, transport, and economic integration for over a millennium.
-
B.
Grand Canal
The Grand Canal is a major man-made waterway in Ireland that historically linked Dublin to the River Shannon, serving as an important route for transport and trade.
-
C.
Grand Canal
The Grand Canal is the main S-shaped waterway in Venice, Italy, lined with historic palaces and serving as the city’s primary thoroughfare for boats and vaporetti.
-
D.
Lahontan Valley irrigation district
The Lahontan Valley irrigation district is an agricultural water management area in western Nevada that supplies and regulates irrigation for farms and ranches around Fallon and the surrounding Lahontan Valley.
-
E.
Gezhouba Dam
Gezhouba Dam is a large hydroelectric gravity dam in Yichang, Hubei, China, notable as the first major dam built on the Yangtze River and an important source of power generation and river navigation control.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
ancient water-management project
ⓘ
irrigation system ⓘ |
| benefits | agriculture in western Sichuan ⓘ |
| builtDuring | Qin state period ⓘ |
| builtUnderRuler |
King Zhaoxiang of Qin
ⓘ
surface form:
King Zhao of Qin
|
| ChineseName |
Dujiangyan Irrigation System
self-linksurface differs
ⓘ
surface form:
都江堰
|
| constructionStartDate | 3rd century BCE ⓘ |
| country | China ⓘ |
| culturalSignificance |
important site in Chinese hydraulic engineering history
ⓘ
symbol of ancient Chinese engineering ingenuity ⓘ |
| designedBy |
Erlang (son of Li Bing)
ⓘ
Li Bing ⓘ |
| engineeringPrinciple |
sediment control through diversion and overflow
ⓘ
using natural topography to regulate water flow ⓘ |
| era | Warring States period ⓘ |
| function |
divert water from Min River to irrigate Chengdu Plain
ⓘ
reduce flooding on the Min River ⓘ |
| hasPart |
Baopingkou (Bottle-Neck) channel
ⓘ
Feishayan spillway ⓘ Yuzui (Fish Mouth) levee ⓘ |
| heritageDesignation |
National Key Cultural Relics Protection Unit of China
ⓘ
surface form:
National Key Cultural Relic of China
UNESCO World Heritage Site ⓘ |
| inception | 3rd century BCE ⓘ |
| influenced | development of Chengdu as a major agricultural center ⓘ |
| irrigates | Chengdu Plain ⓘ |
| irrigatesArea | over 5,000 square kilometers (approximate historical extent) ⓘ |
| languageOfName | Chinese ⓘ |
| locatedIn |
Chengdu Plain
ⓘ
Dujiangyan City ⓘ Sichuan Province ⓘ |
| locatedOnRiver | Min River NERFINISHED ⓘ |
| maintainedBy | local and provincial authorities in Sichuan ⓘ |
| near | Mount Qingcheng ⓘ |
| notableFor |
absence of a traditional dam
ⓘ
continuous operation for over two millennia ⓘ flood control ⓘ irrigation ⓘ |
| partOf |
Mount Qingcheng
ⓘ
surface form:
Mount Qingcheng and the Dujiangyan Irrigation System World Heritage Site
hydraulic projects of ancient China ⓘ |
| RomanizedName |
Dujiangyan Irrigation System
self-linksurface differs
ⓘ
surface form:
Dujiangyan
|
| status | still operational ⓘ |
| touristAttraction | yes ⓘ |
| UNESCOWorldHeritageSiteSince | 2000 ⓘ |
| uses |
bottle-neck channel
ⓘ
diversion weir ⓘ fish mouth levee ⓘ spillway ⓘ |
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: Dujiangyan Irrigation System Description of subject: Dujiangyan Irrigation System is an ancient Chinese water-management project built around the 3rd century BCE that still functions today, renowned for its innovative design that controls flooding and irrigates vast areas without using a traditional dam.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Chengdu
this entity surface form:
Dujiangyan
Dujiangyan Irrigation System
→
ChineseName
→
Dujiangyan Irrigation System
self-linksurface differs
ⓘ
this entity surface form:
都江堰
Dujiangyan Irrigation System
→
RomanizedName
→
Dujiangyan Irrigation System
self-linksurface differs
ⓘ
this entity surface form:
Dujiangyan