Nilometer of al-Mutawakkil
E225860
The Nilometer of al-Mutawakkil is an early Abbasid-era structure in Cairo used to measure the Nile’s water level and predict flooding and taxation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Nilometer of al-Mutawakkil canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2016304 — 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: Nilometer of al-Mutawakkil Context triple: [Roda Island, hasLandmark, Nilometer of al-Mutawakkil]
-
A.
Shams-ol-Emareh building
Shams-ol-Emareh building is a historic multi-story royal structure in Tehran, Iran, renowned as one of the most iconic and early high-rise elements of the Golestan Palace complex and a symbol of Qajar-era architecture.
-
B.
Hisham's Palace
Hisham's Palace is an early Islamic archaeological site near Jericho, renowned for its elaborate Umayyad-era architecture and intricate mosaic floors.
-
C.
Mihrab of the Prophet
The Mihrab of the Prophet is the prayer niche in the Prophet’s Mosque in Medina marking the spot where the Prophet Muhammad led the Muslim community in prayer.
-
D.
Minbar of the Prophet
The Minbar of the Prophet is the historic pulpit in Al-Masjid an-Nabawi in Medina from which the Prophet Muhammad is believed to have delivered sermons and addressed his companions.
-
E.
Insha al-Dawa’ir
Insha al-Dawa’ir is a seminal philosophical and mystical treatise by the Sufi thinker Ibn Arabi that explores metaphysical concepts through the symbolism of circles and cosmological diagrams.
- 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: Nilometer of al-Mutawakkil Target entity description: The Nilometer of al-Mutawakkil is an early Abbasid-era structure in Cairo used to measure the Nile’s water level and predict flooding and taxation.
-
A.
Shams-ol-Emareh building
Shams-ol-Emareh building is a historic multi-story royal structure in Tehran, Iran, renowned as one of the most iconic and early high-rise elements of the Golestan Palace complex and a symbol of Qajar-era architecture.
-
B.
Hisham's Palace
Hisham's Palace is an early Islamic archaeological site near Jericho, renowned for its elaborate Umayyad-era architecture and intricate mosaic floors.
-
C.
Mihrab of the Prophet
The Mihrab of the Prophet is the prayer niche in the Prophet’s Mosque in Medina marking the spot where the Prophet Muhammad led the Muslim community in prayer.
-
D.
Minbar of the Prophet
The Minbar of the Prophet is the historic pulpit in Al-Masjid an-Nabawi in Medina from which the Prophet Muhammad is believed to have delivered sermons and addressed his companions.
-
E.
Insha al-Dawa’ir
Insha al-Dawa’ir is a seminal philosophical and mystical treatise by the Sufi thinker Ibn Arabi that explores metaphysical concepts through the symbolism of circles and cosmological diagrams.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Abbasid-era monument
ⓘ
hydrological measuring structure ⓘ nilometer ⓘ |
| architecturalStyle | early Islamic architecture ⓘ |
| associatedWith |
Islam in Egypt
ⓘ
surface form:
Islamic Egypt
Nile flood management ⓘ pre-modern taxation system in Egypt ⓘ |
| builtFor |
al-Mutawakkil
ⓘ
surface form:
Caliph al-Mutawakkil
|
| category |
Medieval hydraulic structure
ⓘ
Water level measuring station ⓘ |
| city | Cairo ⓘ |
| constructedInPeriod | Abbasid Caliphate ⓘ |
| context | Nile inundation system ⓘ |
| country | Egypt ⓘ |
| culturalSignificance | symbol of dependence on Nile flooding ⓘ |
| era | early Abbasid era ⓘ |
| functionedAs | official gauge of Nile inundation ⓘ |
| hasPart |
central measuring column
ⓘ
graduated scale for water level ⓘ staircase descending to water ⓘ stone-lined well shaft ⓘ |
| heritageStatus | historic monument ⓘ |
| locatedIn |
Cairo
ⓘ
Egypt ⓘ Nile ⓘ
surface form:
Nile River
Roda Island Nilometer complex ⓘ |
| locatedOn | Roda Island ⓘ |
| material |
masonry
ⓘ
stone ⓘ |
| measurementType | river water height ⓘ |
| measurementUnit | cubits ⓘ |
| namedAfter | al-Mutawakkil ⓘ |
| partOf | historic Nile monitoring infrastructure ⓘ |
| region |
Fustat
ⓘ
surface form:
Fustat–Cairo area
|
| religionContext | Islamic ⓘ |
| river | Nile ⓘ |
| significance |
important source for historical hydrological data
ⓘ
key instrument for pre-modern Egyptian economy ⓘ |
| tourismAttraction | yes ⓘ |
| usedBy |
Abbasid administration
ⓘ
agricultural planners ⓘ tax officials ⓘ |
| usedFor |
assessing agricultural prospects
ⓘ
calculating taxation ⓘ fiscal planning ⓘ measuring Nile water level ⓘ monitoring water supply ⓘ predicting annual Nile flood ⓘ |
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: Nilometer of al-Mutawakkil Description of subject: The Nilometer of al-Mutawakkil is an early Abbasid-era structure in Cairo used to measure the Nile’s water level and predict flooding and taxation.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.