al-Musta'in
E242166
Al-Musta'in was an Abbasid caliph of the mid-9th century whose troubled reign during the Samarra period was marked by military factionalism and political instability.
All labels observed (3)
| Label | Occurrences |
|---|---|
| al-Musta'in canonical | 2 |
| al-Musta'in billah | 1 |
| al-Mustaʿin | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2186673 — 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: al-Musta'in Context triple: [Samarra period, hasCaliph, al-Musta'in]
-
A.
al-Musta'sim
Al-Musta'sim was the last Abbasid caliph in Baghdad, whose defeat and death during the Mongol sack of the city in 1258 marked the end of the classical Abbasid Caliphate.
-
B.
Sayyid al-Taifa
Sayyid al-Taifa is an honorific title meaning "Master of the (Sufi) Community," traditionally associated with the early Sufi leader al-Junayd of Baghdad.
-
C.
al-ʿAzīz Billāh
al-ʿAzīz Billāh was a 10th-century Fatimid caliph who consolidated Fatimid rule in Egypt and expanded their influence across the eastern Mediterranean.
-
D.
Sheikh Othman
Sheikh Othman is a district in the city of Aden in southern Yemen, historically part of the former British Colony of Aden.
-
E.
Mālik Yawm ad-Dīn
Mālik Yawm ad-Dīn is an Islamic divine epithet referring to God as the sovereign and ultimate judge on the Day of Judgment.
- 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: al-Musta'in Target entity description: Al-Musta'in was an Abbasid caliph of the mid-9th century whose troubled reign during the Samarra period was marked by military factionalism and political instability.
-
A.
al-Musta'sim
Al-Musta'sim was the last Abbasid caliph in Baghdad, whose defeat and death during the Mongol sack of the city in 1258 marked the end of the classical Abbasid Caliphate.
-
B.
Sayyid al-Taifa
Sayyid al-Taifa is an honorific title meaning "Master of the (Sufi) Community," traditionally associated with the early Sufi leader al-Junayd of Baghdad.
-
C.
al-ʿAzīz Billāh
al-ʿAzīz Billāh was a 10th-century Fatimid caliph who consolidated Fatimid rule in Egypt and expanded their influence across the eastern Mediterranean.
-
D.
Sheikh Othman
Sheikh Othman is a district in the city of Aden in southern Yemen, historically part of the former British Colony of Aden.
-
E.
Mālik Yawm ad-Dīn
Mālik Yawm ad-Dīn is an Islamic divine epithet referring to God as the sovereign and ultimate judge on the Day of Judgment.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
Abbasid caliph
ⓘ
Caliph ⓘ Muslim ruler ⓘ |
| abdicatedInFavorOf | al-Mu'tazz ⓘ |
| abdicationYear | 866 ⓘ |
| associatedWith | Turkish military guard in Samarra ⓘ |
| birthPlace | Samarra ⓘ |
| burialPlace | Samarra ⓘ |
| caliphOf |
Abbasid Caliphate
ⓘ
Baghdad-based caliphate ⓘ |
| capitalDuringReign | Samarra ⓘ |
| chronologicalOrderAsCaliph | 12th Abbasid caliph ⓘ |
| conflict | civil war with al-Mu'tazz ⓘ |
| deathCause | execution ⓘ |
| deathPlace | Samarra ⓘ |
| deathYear | 866 ⓘ |
| dynasty |
Abbasid Caliphate
ⓘ
surface form:
Abbasid dynasty
|
| era | 9th century ⓘ |
| ethnicity | Arab ⓘ |
| father | Muhammad ibn al-Mu'tasim ⓘ |
| fullName | Abu al-Abbas Ahmad ibn Muhammad ⓘ |
| governmentTypeDuringReign | Caliphate ⓘ |
| grandfather | al-Mu'tasim ⓘ |
| historicalRegion | Iraq ⓘ |
| house | House of al-Abbas ⓘ |
| knownFor | weak central authority over military factions ⓘ |
| language | Arabic ⓘ |
| notableFor |
political instability during his caliphate
ⓘ
reign marked by military factionalism ⓘ |
| overthrownBy | supporters of al-Mu'tazz ⓘ |
| period | Samarra period of the Abbasid Caliphate ⓘ |
| politicalStatusAfterAbdication | prisoner ⓘ |
| predecessor |
al-Muntasir
ⓘ
al-Mutawakkil ⓘ |
| regionRuled | Iraq and adjacent Abbasid territories ⓘ |
| regnalName |
al-Musta'in
self-linksurface differs
ⓘ
surface form:
al-Musta'in billah
|
| reignEnd | 866 ⓘ |
| reignStart | 862 ⓘ |
| religion | Islam ⓘ |
| struggledWith | power of Turkish military commanders ⓘ |
| successionType | elected by military elites in Samarra ⓘ |
| successor | al-Mu'tazz ⓘ |
| title |
Imam
ⓘ
surface form:
Commander of the Faithful
|
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: al-Musta'in Description of subject: Al-Musta'in was an Abbasid caliph of the mid-9th century whose troubled reign during the Samarra period was marked by military factionalism and political instability.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
al-Musta'in billah
this entity surface form:
al-Mustaʿin