Cyaxares
E356569
Cyaxares was a 6th-century BCE king of the Medes who reorganized the Median military and expanded the empire, playing a key role in the fall of the Assyrian Empire.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Cyaxares canonical | 20 |
| Cyaxares I | 1 |
| Cyaxares II | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3159350 — 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: Cyaxares Context triple: [Median Empire, notableRuler, Cyaxares]
-
A.
Phraortes
Phraortes was an early king of the Medes who expanded Median power and is traditionally credited with helping lay the foundations of the Median Empire in ancient Iran.
-
B.
Astyages
Astyages was the last king of the Median Empire, best known for being overthrown by his grandson Cyrus the Great, which led to the rise of the Achaemenid Persian Empire.
-
C.
Achaemenes
Achaemenes is the legendary founder and eponymous ancestor of the Achaemenid dynasty that ruled the first Persian Empire.
-
D.
Argishti I
Argishti I was a powerful 8th-century BCE king of Urartu known for expanding the kingdom’s territory, founding the fortress city of Erebuni (modern Yerevan), and commissioning extensive building and irrigation projects.
-
E.
Artaxerxes I of Persia
Artaxerxes I of Persia was a 5th-century BCE Achaemenid king best known for ruling a vast Persian Empire and appearing in biblical history as the monarch who interacted with Jewish leaders during the restoration of Jerusalem.
- 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: Cyaxares Target entity description: Cyaxares was a 6th-century BCE king of the Medes who reorganized the Median military and expanded the empire, playing a key role in the fall of the Assyrian Empire.
-
A.
Phraortes
Phraortes was an early king of the Medes who expanded Median power and is traditionally credited with helping lay the foundations of the Median Empire in ancient Iran.
-
B.
Astyages
Astyages was the last king of the Median Empire, best known for being overthrown by his grandson Cyrus the Great, which led to the rise of the Achaemenid Persian Empire.
-
C.
Achaemenes
Achaemenes is the legendary founder and eponymous ancestor of the Achaemenid dynasty that ruled the first Persian Empire.
-
D.
Argishti I
Argishti I was a powerful 8th-century BCE king of Urartu known for expanding the kingdom’s territory, founding the fortress city of Erebuni (modern Yerevan), and commissioning extensive building and irrigation projects.
-
E.
Artaxerxes I of Persia
Artaxerxes I of Persia was a 5th-century BCE Achaemenid king best known for ruling a vast Persian Empire and appearing in biblical history as the monarch who interacted with Jewish leaders during the restoration of Jerusalem.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
Median king
ⓘ
king ⓘ person ⓘ |
| alliance |
Nabopolassar
ⓘ
Neo-Babylonian Empire ⓘ |
| battle | Siege of Nineveh ⓘ |
| capital | Ecbatana ⓘ |
| centuryOfActivity |
6th century BCE
ⓘ
7th century BCE ⓘ |
| child | Astyages ⓘ |
| conflict | Neo-Assyrian Empire ⓘ |
| country | Median Empire ⓘ |
| deathDate | c. 585 BCE ⓘ |
| dynasty | Median dynasty ⓘ |
| ethnicity | Median ⓘ |
| event | participation in the destruction of Nineveh in 612 BCE ⓘ |
| expandedInto |
Assyrian territories
ⓘ
parts of Anatolia ⓘ parts of northwestern Iran ⓘ |
| father | Phraortes ⓘ |
| gender | male ⓘ |
| historicalPeriod | Iron Age ⓘ |
| knownFor |
expanding the Median Empire
ⓘ
key role in the fall of the Neo-Assyrian Empire ⓘ reorganizing the Median military ⓘ |
| languageContext | Old Iranian languages ⓘ |
| legacy | foundation for later Achaemenid expansion ⓘ |
| militaryReform |
creation of specialized military divisions
ⓘ
introduction of separate infantry and cavalry units ⓘ |
| name |
Cyaxares
self-link
ⓘ
Uvaxštra ⓘ |
| notableEvent | war with Lydia ending in a solar-eclipse truce ⓘ |
| occupation | monarch ⓘ |
| positionHeld |
Cyrus
ⓘ
surface form:
King of the Medes
|
| predecessor | Phraortes ⓘ |
| regionRuled |
northwestern Iran
ⓘ
parts of Anatolia ⓘ parts of Mesopotamia ⓘ |
| reignEnd | c. 585 BCE ⓘ |
| reignStart | c. 625 BCE ⓘ |
| religion | ancient Iranian religion ⓘ |
| source | Herodotus ⓘ |
| successor | Astyages ⓘ |
| treaty | peace agreement with Alyattes of Lydia ⓘ |
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: Cyaxares Description of subject: Cyaxares was a 6th-century BCE king of the Medes who reorganized the Median military and expanded the empire, playing a key role in the fall of the Assyrian Empire.
Referenced by (22)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Cyaxares II