Calypso Deep
E10415
Calypso Deep is the deepest known point in the Mediterranean Sea, located in the Hellenic Trench near Greece.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Calypso Deep canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T74347 — 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: Calypso Deep Context triple: [Mediterranean Sea, hasDeepestPoint, Calypso Deep]
-
A.
Sirena Deep
Sirena Deep is one of the deepest known points in the world's oceans, located within the Mariana Trench in the western Pacific Ocean.
-
B.
Molloy Deep
Molloy Deep is the deepest known part of the Arctic Ocean, located in the Fram Strait between Greenland and Svalbard.
-
C.
Calypso
Calypso is a nymph from Greek mythology best known for detaining the hero Odysseus on her island of Ogygia in Homer's Odyssey.
-
D.
Drake Passage
Drake Passage is the turbulent body of water between South America's Cape Horn and Antarctica, known for linking the Atlantic and Pacific Oceans and some of the roughest seas in the world.
-
E.
Ascension
Ascension is a major Christian feast commemorating Jesus Christ’s bodily ascent into heaven 40 days after his resurrection.
- 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: Calypso Deep Target entity description: Calypso Deep is the deepest known point in the Mediterranean Sea, located in the Hellenic Trench near Greece.
-
A.
Sirena Deep
Sirena Deep is one of the deepest known points in the world's oceans, located within the Mariana Trench in the western Pacific Ocean.
-
B.
Molloy Deep
Molloy Deep is the deepest known part of the Arctic Ocean, located in the Fram Strait between Greenland and Svalbard.
-
C.
Calypso
Calypso is a nymph from Greek mythology best known for detaining the hero Odysseus on her island of Ogygia in Homer's Odyssey.
-
D.
Drake Passage
Drake Passage is the turbulent body of water between South America's Cape Horn and Antarctica, known for linking the Atlantic and Pacific Oceans and some of the roughest seas in the world.
-
E.
Ascension
Ascension is a major Christian feast commemorating Jesus Christ’s bodily ascent into heaven 40 days after his resurrection.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
deepest point
ⓘ
geographical feature ⓘ undersea depression ⓘ |
| adjacentTo | Greek maritime zone ⓘ |
| continent | Europe ⓘ |
| coordinateSystem | geographic coordinates ⓘ |
| country | Greece ⓘ |
| depthRanking |
deepest known point in the Mediterranean Sea
ⓘ
one of the deepest points in any inland sea ⓘ |
| discoveredBy | RV Calypso ⓘ |
| environment |
aphotic zone
ⓘ
hadal-like deep-sea conditions ⓘ |
| exploredBy |
French oceanographic expeditions
ⓘ
Jacques-Yves Cousteau ⓘ |
| featureOf | Hellenic Arc ⓘ |
| geologicalSetting |
Hellenic subduction system
ⓘ
subduction zone ⓘ |
| knownSince | 20th century ⓘ |
| locatedIn |
Hellenic Trench
ⓘ
Ionian Sea ⓘ Mediterranean Sea ⓘ eastern Mediterranean ⓘ
linked to:
Eastern Mediterranean
|
| marineZone | international waters vicinity of Greece ⓘ |
| maximumDepthFeet | about 17280 ⓘ |
| maximumDepthMetres |
about 5267
ⓘ
approximately 5270 ⓘ |
| namedAfter |
RV Calypso
ⓘ
research vessel Calypso ⓘ |
| nearestCountry | Greece ⓘ |
| notableFor |
being a key reference point in Mediterranean bathymetry
ⓘ
extreme depth in a relatively small sea ⓘ |
| oceanBasin | Mediterranean Sea ⓘ |
| partOf |
Hellenic Trench
ⓘ
Mediterranean Ridge region ⓘ |
| pressureAtBottom |
over 52 megapascals
ⓘ
over 520 atmospheres ⓘ |
| region |
south of Greece
ⓘ
southwest of Peloponnese ⓘ |
| researchUse |
study of Mediterranean deep-water circulation
ⓘ
study of subduction-related tectonics ⓘ |
| salinityContext | high-salinity deep waters of the Mediterranean ⓘ |
| seaFloorType | abyssal plain and trench floor ⓘ |
| surveyMethod |
echo sounding
ⓘ
multibeam bathymetry ⓘ |
| tectonicPlate |
Aegean Sea Plate
ⓘ
African Plate ⓘ |
| waterBodyType | semi-enclosed sea ⓘ |
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: Calypso Deep Description of subject: Calypso Deep is the deepest known point in the Mediterranean Sea, located in the Hellenic Trench near Greece.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.