Siege of Baghdad (812–813)
E884991
The Siege of Baghdad (812–813) was a pivotal civil war confrontation in the Abbasid Caliphate in which al-Ma'mun's forces besieged the capital to depose his brother al-Amin, leading to al-Amin's death and a decisive shift in imperial power.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Siege of Baghdad (812–813) canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T10775279 — 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: Siege of Baghdad (812–813) Context triple: [Fourth Fitna, significantEvent, Siege of Baghdad (812–813)]
-
A.
Siege of Mecca (683)
The Siege of Mecca (683) was a pivotal Umayyad assault on the holy city during the Second Fitna, culminating in the bombardment of the Kaaba and the death of the anti-caliph Abd Allah ibn al-Zubayr’s key supporters.
-
B.
Siege of Medina
The Siege of Medina was a prolonged World War I campaign in which Ottoman forces under Fakhri Pasha held the holy city of Medina against Arab Revolt and Allied forces from 1916 to 1919.
-
C.
Siege of Ctesiphon
The Siege of Ctesiphon was a pivotal early 7th-century battle in which Rashidun forces captured the Sasanian capital, hastening the collapse of the Persian Empire and consolidating Muslim control over Mesopotamia.
-
D.
Siege of Mecca (692)
The Siege of Mecca in 692 was the decisive Umayyad assault on the holy city that crushed Abdullah ibn al-Zubayr’s rival caliphate and effectively ended the Second Fitna in early Islamic history.
-
E.
Siege of Damascus (634)
The Siege of Damascus (634) was an early Muslim conquest in which Rashidun forces captured the key Byzantine city of Damascus, marking a decisive turning point in the Arab–Byzantine wars.
- 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: Siege of Baghdad (812–813) Target entity description: The Siege of Baghdad (812–813) was a pivotal civil war confrontation in the Abbasid Caliphate in which al-Ma'mun's forces besieged the capital to depose his brother al-Amin, leading to al-Amin's death and a decisive shift in imperial power.
-
A.
Siege of Mecca (683)
The Siege of Mecca (683) was a pivotal Umayyad assault on the holy city during the Second Fitna, culminating in the bombardment of the Kaaba and the death of the anti-caliph Abd Allah ibn al-Zubayr’s key supporters.
-
B.
Siege of Medina
The Siege of Medina was a prolonged World War I campaign in which Ottoman forces under Fakhri Pasha held the holy city of Medina against Arab Revolt and Allied forces from 1916 to 1919.
-
C.
Siege of Ctesiphon
The Siege of Ctesiphon was a pivotal early 7th-century battle in which Rashidun forces captured the Sasanian capital, hastening the collapse of the Persian Empire and consolidating Muslim control over Mesopotamia.
-
D.
Siege of Mecca (692)
The Siege of Mecca in 692 was the decisive Umayyad assault on the holy city that crushed Abdullah ibn al-Zubayr’s rival caliphate and effectively ended the Second Fitna in early Islamic history.
-
E.
Siege of Damascus (634)
The Siege of Damascus (634) was an early Muslim conquest in which Rashidun forces captured the key Byzantine city of Damascus, marking a decisive turning point in the Arab–Byzantine wars.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
civil war battle
ⓘ
military conflict ⓘ siege ⓘ |
| belligerentCommander |
Tahir ibn al-Husayn
NERFINISHED
ⓘ
al-Amin NERFINISHED ⓘ al-Harthama ibn A'yan NERFINISHED ⓘ |
| cause |
abrogation of succession agreement by al-Amin
ⓘ
succession dispute between al-Amin and al-Ma'mun ⓘ |
| chronologicalOrder | early 9th century ⓘ |
| combatant |
forces loyal to al-Amin
ⓘ
forces loyal to al-Ma'mun ⓘ |
| conflictIn | Fourth Fitna NERFINISHED ⓘ |
| conflictType | succession conflict ⓘ |
| dynastyContext | Abbasid dynasty NERFINISHED ⓘ |
| endDate | 813 ⓘ |
| endedWith |
capture of al-Amin
ⓘ
execution of al-Amin ⓘ |
| followedBy |
consolidation of Khurasani influence at the Abbasid court
ⓘ
reign of al-Ma'mun as Abbasid caliph ⓘ |
| historicalEra | Islamic Golden Age NERFINISHED ⓘ |
| historicalPeriod | Abbasid Caliphate NERFINISHED ⓘ |
| involved |
blockade of Baghdad
ⓘ
destruction of parts of Baghdad ⓘ urban warfare in Baghdad ⓘ |
| location |
Abbasid Caliphate
NERFINISHED
ⓘ
Baghdad NERFINISHED ⓘ Iraq NERFINISHED ⓘ |
| notableCommanderSideAl-Amin | Ali ibn Isa ibn Mahan GENERATED ⓘ |
| notableCommanderSideAl-Ma'mun |
Tahir ibn al-Husayn
GENERATED
ⓘ
al-Harthama ibn A'yan GENERATED ⓘ |
| opponent |
al-Amin
NERFINISHED
ⓘ
al-Ma'mun NERFINISHED ⓘ |
| partOf | Abbasid civil war NERFINISHED ⓘ |
| politicalConsequence |
recognition of al-Ma'mun as caliph throughout the empire
ⓘ
weakening of Baghdad's political primacy ⓘ |
| precededBy |
Battle of Ray
NERFINISHED
ⓘ
advance of Khurasani forces toward Iraq ⓘ |
| primaryTheater | Baghdad city defenses ⓘ |
| religionContext | Sunni Islam NERFINISHED ⓘ |
| result |
accession of al-Ma'mun as sole Abbasid caliph
ⓘ
death of Caliph al-Amin ⓘ decisive shift of power to al-Ma'mun ⓘ victory of al-Ma'mun's forces ⓘ |
| significance |
decisive confrontation of the Fourth Fitna
ⓘ
shift of imperial power away from Baghdad-based elites ⓘ strengthening of Khurasani military elites ⓘ |
| startDate | 812 ⓘ |
| year |
812
ⓘ
813 ⓘ |
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: Siege of Baghdad (812–813) Description of subject: The Siege of Baghdad (812–813) was a pivotal civil war confrontation in the Abbasid Caliphate in which al-Ma'mun's forces besieged the capital to depose his brother al-Amin, leading to al-Amin's death and a decisive shift in imperial power.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.