Euthydemus (sophist)
E190158
Euthydemus (sophist) was an ancient Greek sophist known primarily from Plato’s dialogue "Euthydemus," where he and his brother Dionysodorus exemplify eristic argumentation and deceptive reasoning.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Euthydemus (sophist) canonical | 3 |
| Euthydemus (Plato) | 1 |
| Euthydemus (character) | 1 |
| Euthydemus (dialogue) | 1 |
| sophists Euthydemus and Dionysodorus | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1685813 — 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: Euthydemus (sophist) Context triple: [Euthydemus, featuresCharacter, Euthydemus (sophist)]
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A.
Eubulides of Miletus
Eubulides of Miletus was a 4th-century BCE Greek philosopher of the Megarian school, best known for formulating several famous logical paradoxes.
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B.
Gorgias
Gorgias was a pre-Socratic Greek sophist and rhetorician renowned for his skillful, ornamental style of speech and his skeptical, paradoxical philosophical arguments.
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C.
Gorgias
Gorgias is a Socratic dialogue by Plato that examines the nature of rhetoric, justice, and the good life through a debate between Socrates and the sophist Gorgias.
-
D.
Euclid of Megara
Euclid of Megara was an ancient Greek philosopher, founder of the Megarian school, known for combining Socratic ethics with Eleatic logic and dialectical methods.
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E.
Cebes of Thebes
Cebes of Thebes was an ancient Greek philosopher, a disciple of Socrates, and a prominent interlocutor in Plato’s dialogue "Phaedo."
- 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: Euthydemus (sophist) Target entity description: Euthydemus (sophist) was an ancient Greek sophist known primarily from Plato’s dialogue "Euthydemus," where he and his brother Dionysodorus exemplify eristic argumentation and deceptive reasoning.
-
A.
Eubulides of Miletus
Eubulides of Miletus was a 4th-century BCE Greek philosopher of the Megarian school, best known for formulating several famous logical paradoxes.
-
B.
Gorgias
Gorgias is a Socratic dialogue by Plato that examines the nature of rhetoric, justice, and the good life through a debate between Socrates and the sophist Gorgias.
-
C.
Gorgias
Gorgias was a pre-Socratic Greek sophist and rhetorician renowned for his skillful, ornamental style of speech and his skeptical, paradoxical philosophical arguments.
-
D.
Euclid of Megara
Euclid of Megara was an ancient Greek philosopher, founder of the Megarian school, known for combining Socratic ethics with Eleatic logic and dialectical methods.
-
E.
Cebes of Thebes
Cebes of Thebes was an ancient Greek philosopher, a disciple of Socrates, and a prominent interlocutor in Plato’s dialogue "Phaedo."
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
ancient Greek sophist
ⓘ
historical person ⓘ |
| activity |
deceptive reasoning
ⓘ
eristic argumentation ⓘ |
| associatedWith | Dionysodorus ⓘ |
| collaboratesWith | Dionysodorus ⓘ |
| contrastedWith | Socrates ⓘ |
| countryOfOrigin |
Greek Antiquity
ⓘ
surface form:
Ancient Greece
|
| depictedAs | master of contentious argument ⓘ |
| era | Classical Greece ⓘ |
| focusOfCritiqueBy | Plato ⓘ |
| genreAppearance | Socratic dialogue ⓘ |
| hasSibling | Dionysodorus ⓘ |
| knownFromWork |
"Euthydemus" by Plato
ⓘ
surface form:
Plato's dialogue "Euthydemus"
|
| language | Ancient Greek ⓘ |
| name | Euthydemus ⓘ |
| notableFor |
demonstrations of eristic reasoning
ⓘ
paradoxical arguments ⓘ |
| occupation | sophist ⓘ |
| philosophicalReputation | example of sophistic eristic ⓘ |
| philosophicalStance | emphasis on winning arguments over truth ⓘ |
| philosophicalTradition | Sophistic movement ⓘ |
| portrayedBy | Plato ⓘ |
| roleInDialogue | main interlocutor in Plato's "Euthydemus" ⓘ |
| specializesIn | eristic ⓘ |
| subjectOf | Plato's critique of sophistry ⓘ |
| teaches |
argumentative techniques
ⓘ
rhetorical skills ⓘ |
| teachingMethod | question-and-answer refutation ⓘ |
| usesTechnique |
equivocation
ⓘ
logical fallacies ⓘ verbal trickery ⓘ |
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: Euthydemus (sophist) Description of subject: Euthydemus (sophist) was an ancient Greek sophist known primarily from Plato’s dialogue "Euthydemus," where he and his brother Dionysodorus exemplify eristic argumentation and deceptive reasoning.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Euthydemus (dialogue)
this entity surface form:
Euthydemus (character)
this entity surface form:
sophists Euthydemus and Dionysodorus