Morgulduin
E903474
Morgulduin is a dark, sinister river in J.R.R. Tolkien’s Middle-earth that flows through the valley of Minas Morgul and joins the Great River Anduin.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Morgulduin canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11047592 — 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: Morgulduin Context triple: [Anduin, hasTributary, Morgulduin]
-
A.
Nizerand River
The Nizerand River is a small watercourse in eastern France that flows through the Beaujolais region before joining the Azergues River.
-
B.
River Trym
The River Trym is a small river in Bristol, England, that flows through the northern suburbs before joining the River Avon.
-
C.
Arda River
The Arda River is a tributary of the Maritsa (Evros) River in the Balkans, flowing through Bulgaria and Greece before passing near the Turkish city of Edirne.
-
D.
River Ithon
River Ithon is a river in mid Wales that flows through Powys before joining the River Wye.
-
E.
Anduin
Anduin is the great river of Middle-earth, a vast waterway flowing from the northern regions down through key lands like Lothlórien and Gondor to the sea.
- 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: Morgulduin Target entity description: Morgulduin is a dark, sinister river in J.R.R. Tolkien’s Middle-earth that flows through the valley of Minas Morgul and joins the Great River Anduin.
-
A.
Nizerand River
The Nizerand River is a small watercourse in eastern France that flows through the Beaujolais region before joining the Azergues River.
-
B.
River Trym
The River Trym is a small river in Bristol, England, that flows through the northern suburbs before joining the River Avon.
-
C.
Arda River
The Arda River is a tributary of the Maritsa (Evros) River in the Balkans, flowing through Bulgaria and Greece before passing near the Turkish city of Edirne.
-
D.
River Ithon
River Ithon is a river in mid Wales that flows through Powys before joining the River Wye.
-
E.
Anduin
Anduin is the great river of Middle-earth, a vast waterway flowing from the northern regions down through key lands like Lothlórien and Gondor to the sea.
- F. None of above. chosen
Statements (36)
| Predicate | Object |
|---|---|
| instanceOf |
fictional river
ⓘ
river of Middle-earth ⓘ |
| adjacentTo | stairs of Cirith Ungol NERFINISHED ⓘ |
| alsoKnownAs | River of Imlad Morgul NERFINISHED ⓘ |
| appearsIn |
The Lord of the Rings
NERFINISHED
ⓘ
The Return of the King NERFINISHED ⓘ |
| associatedWith |
Minas Morgul
NERFINISHED
ⓘ
Morgul Vale NERFINISHED ⓘ Nazgûl NERFINISHED ⓘ Witch-king of Angmar NERFINISHED ⓘ |
| creator | J. R. R. Tolkien ⓘ |
| describedAs |
dark
ⓘ
sinister ⓘ tainted by evil ⓘ |
| etymologyContains |
Morgul (black sorcery)
NERFINISHED
ⓘ
duin (river) NERFINISHED ⓘ |
| firstPublishedIn | The Return of the King NERFINISHED ⓘ |
| flowsFrom | Ephel Dúath NERFINISHED ⓘ |
| flowsThrough |
Imlad Morgul
NERFINISHED
ⓘ
valley of Minas Morgul NERFINISHED ⓘ |
| flowsWestwardTo | Anduin NERFINISHED ⓘ |
| genre | high fantasy ⓘ |
| languageOfName | Sindarin NERFINISHED ⓘ |
| locatedInFictionalRegion | Mordor NERFINISHED ⓘ |
| locatedNear | Minas Morgul NERFINISHED ⓘ |
| medium | literature ⓘ |
| near | Morgul-road NERFINISHED ⓘ |
| partOf | Anduin river system NERFINISHED ⓘ |
| relatedTo |
Anduin
NERFINISHED
ⓘ
Morgul Vale NERFINISHED ⓘ |
| settingOf | passage of Frodo and Sam near Minas Morgul ⓘ |
| sourceRegion | Mountains of Shadow NERFINISHED ⓘ |
| tributaryOf | Anduin NERFINISHED ⓘ |
| universe | Middle-earth legendarium NERFINISHED ⓘ |
| waterDescribedAs |
corrupted
ⓘ
sickly pale ⓘ |
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: Morgulduin Description of subject: Morgulduin is a dark, sinister river in J.R.R. Tolkien’s Middle-earth that flows through the valley of Minas Morgul and joins the Great River Anduin.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.