Ahmad ibn Muhammad al-Hasib
E798770
Ahmad ibn Muhammad al-Hasib was a medieval Islamic architect and engineer best known for designing the Roda Nilometer, an important structure used to measure the Nile’s flood levels in Cairo.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ahmad ibn Muhammad al-Hasib canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T9384060 — 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: Ahmad ibn Muhammad al-Hasib Context triple: [Roda Nilometer, architect, Ahmad ibn Muhammad al-Hasib]
-
A.
Al-Samaw'al
Al-Samaw'al was a 12th-century Muslim mathematician best known for his early work on algebraic symbolism and the systematic use of negative numbers.
-
B.
Muhammad ibn Ahmad al-Sarakhsi
Muhammad ibn Ahmad al-Sarakhsi was an 11th-century Hanafi jurist and theologian from Transoxiana, renowned as one of the foremost authorities in Islamic jurisprudence.
-
C.
Ibn al-Jazzar
Ibn al-Jazzar was a 10th-century Tunisian physician and medical writer renowned for his influential works on practical medicine, pediatrics, and travel health that shaped Islamic and later European medical traditions.
-
D.
Abu Nasr ibn al-Sabbagh
Abu Nasr ibn al-Sabbagh was a prominent medieval Islamic scholar and jurist associated with the renowned Nizamiyya of Baghdad.
-
E.
Ibrahim ibn Yaqub al-Sijistani
Ibrahim ibn Yaqub al-Sijistani was a 10th-century Islamic philosopher and theologian known for his influential works in Ismaili thought and Neoplatonic metaphysics.
- 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: Ahmad ibn Muhammad al-Hasib Target entity description: Ahmad ibn Muhammad al-Hasib was a medieval Islamic architect and engineer best known for designing the Roda Nilometer, an important structure used to measure the Nile’s flood levels in Cairo.
-
A.
Al-Samaw'al
Al-Samaw'al was a 12th-century Muslim mathematician best known for his early work on algebraic symbolism and the systematic use of negative numbers.
-
B.
Muhammad ibn Ahmad al-Sarakhsi
Muhammad ibn Ahmad al-Sarakhsi was an 11th-century Hanafi jurist and theologian from Transoxiana, renowned as one of the foremost authorities in Islamic jurisprudence.
-
C.
Ibn al-Jazzar
Ibn al-Jazzar was a 10th-century Tunisian physician and medical writer renowned for his influential works on practical medicine, pediatrics, and travel health that shaped Islamic and later European medical traditions.
-
D.
Abu Nasr ibn al-Sabbagh
Abu Nasr ibn al-Sabbagh was a prominent medieval Islamic scholar and jurist associated with the renowned Nizamiyya of Baghdad.
-
E.
Ibrahim ibn Yaqub al-Sijistani
Ibrahim ibn Yaqub al-Sijistani was a 10th-century Islamic philosopher and theologian known for his influential works in Ismaili thought and Neoplatonic metaphysics.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
architect
ⓘ
medieval Islamic scholar ⓘ person ⓘ |
| al-HasibMeans | the calculator ⓘ |
| associatedWith |
calibration of Nilometer scales
ⓘ
measurement of Nile flood levels ⓘ |
| culture | Islamic ⓘ |
| designed | Roda Nilometer NERFINISHED ⓘ |
| era |
Islamic Golden Age
NERFINISHED
ⓘ
medieval period ⓘ |
| fieldOfWork |
applied mathematics
ⓘ
architecture ⓘ engineering ⓘ hydraulic engineering ⓘ |
| hasRole |
court engineer
ⓘ
designer of water-measuring structures ⓘ |
| influenced | later Islamic hydraulic engineering ⓘ |
| influencedBy | earlier Islamic mathematicians ⓘ |
| knownFor |
design of the Roda Nilometer
ⓘ
work on hydraulic engineering ⓘ |
| notableWork | Roda Nilometer NERFINISHED ⓘ |
| occupation |
architect
ⓘ
engineer ⓘ mathematician ⓘ |
| placeOfActivity |
Cairo
NERFINISHED
ⓘ
Egypt NERFINISHED ⓘ |
| region | Middle East ⓘ |
| religion | Islam ⓘ |
| usedTitle | al-Hasib NERFINISHED ⓘ |
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: Ahmad ibn Muhammad al-Hasib Description of subject: Ahmad ibn Muhammad al-Hasib was a medieval Islamic architect and engineer best known for designing the Roda Nilometer, an important structure used to measure the Nile’s flood levels in Cairo.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Roda Island Nilometer