Euthydemus (son of Cephalus)
E712312
Euthydemus, son of Cephalus, is a young Athenian mentioned in Plato’s dialogues as part of the wealthy and philosophically inclined household that Socrates visits in the Piraeus.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Euthydemus (brother of Lysias) | 1 |
| Euthydemus (son of Cephalus) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8143394 — 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 (son of Cephalus) Context triple: [house of Cephalus in Piraeus, inhabitant, Euthydemus (son of Cephalus)]
-
A.
Eupompus
Eupompus was an ancient Greek painter from Sicyon, traditionally regarded as the founder of the Sicyonic school of painting.
-
B.
Aristomachus
Aristomachus is a figure in Greek mythology, a descendant of Heracles and a member of the Heraclid royal lineage involved in the legendary return to the Peloponnese.
-
C.
Demetrius of Phalerum
Demetrius of Phalerum was an Athenian orator, statesman, and philosopher of the Peripatetic school who governed Athens under Macedonian rule and later became an influential scholar at the Ptolemaic court in Alexandria.
-
D.
Pherendates
Pherendates was an Achaemenid Persian official who served as satrap (provincial governor) of Egypt during the early period of Persian rule.
-
E.
Theocles
Theocles was an ancient Greek colonizer traditionally credited with leading the founding of the city of Naxos in Sicily, one of the earliest Greek settlements in the western Mediterranean.
- 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 (son of Cephalus) Target entity description: Euthydemus, son of Cephalus, is a young Athenian mentioned in Plato’s dialogues as part of the wealthy and philosophically inclined household that Socrates visits in the Piraeus.
-
A.
Eupompus
Eupompus was an ancient Greek painter from Sicyon, traditionally regarded as the founder of the Sicyonic school of painting.
-
B.
Aristomachus
Aristomachus is a figure in Greek mythology, a descendant of Heracles and a member of the Heraclid royal lineage involved in the legendary return to the Peloponnese.
-
C.
Demetrius of Phalerum
Demetrius of Phalerum was an Athenian orator, statesman, and philosopher of the Peripatetic school who governed Athens under Macedonian rule and later became an influential scholar at the Ptolemaic court in Alexandria.
-
D.
Pherendates
Pherendates was an Achaemenid Persian official who served as satrap (provincial governor) of Egypt during the early period of Persian rule.
-
E.
Theocles
Theocles was an ancient Greek colonizer traditionally credited with leading the founding of the city of Naxos in Sicily, one of the earliest Greek settlements in the western Mediterranean.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
Platonic character
ⓘ
ancient Athenian ⓘ fictional character ⓘ |
| associatedWith |
Piraeus circle of Socrates
ⓘ
Socrates ⓘ philosophically inclined household of Cephalus ⓘ |
| citizenship | Athens ⓘ |
| familyOrigin | Syracusan metic family in Athens ⓘ |
| genreContext | Socratic dialogue ⓘ |
| household | Household of Cephalus ⓘ |
| language | Ancient Greek ⓘ |
| literaryRole | minor character in Plato’s dialogues ⓘ |
| mentionedIn |
Phaedrus (Plato)
ⓘ
linked to:
Phaedrus
Republic (Plato) ⓘ
linked to:
Plato's Republic
other Platonic dialogues ⓘ |
| name | Euthydemus ⓘ |
| notableFor | being part of the wealthy and philosophically inclined household visited by Socrates in the Piraeus ⓘ |
| parent | Cephalus ⓘ |
| philosophicalContext | Platonism ⓘ |
| residence | Piraeus ⓘ |
| sibling |
Euthydemus (brother of Lysias)
ⓘ
linked to:
Euthydemus (son of Cephalus)
Lysias ⓘ Polemarchus ⓘ |
| socialClass | wealthy Athenian family ⓘ |
| timePeriod | Classical Athens ⓘ |
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 (son of Cephalus) Description of subject: Euthydemus, son of Cephalus, is a young Athenian mentioned in Plato’s dialogues as part of the wealthy and philosophically inclined household that Socrates visits in the Piraeus.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Euthydemus (son of Cephalus)