Insula Șerpilor
E787299
Insula Șerpilor is a small but strategically important Black Sea island known for its geopolitical significance and maritime boundary disputes between Ukraine and Romania.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Insula Șerpilor canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T9213990 — 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: Insula Șerpilor Context triple: [Острів Зміїний, RomanianName, Insula Șerpilor]
-
A.
Serpentina Island
Serpentina Island is a small island located within Guanabara Bay on the coast of Rio de Janeiro, Brazil.
-
B.
Isola
Isola is a small alpine commune in southeastern France known for its ski resort Isola 2000 and proximity to the Italian border.
-
C.
Didicas Island
Didicas Island is a small, volcanically active island in the Babuyan Island group of northern Philippines, known for having emerged from undersea eruptions in the 20th century.
-
D.
Insula Leporum
Insula Leporum is the Latin name for Margaret Island, a historic recreational island located in the Danube River in central Budapest, Hungary.
-
E.
Solentiname Islands
The Solentiname Islands are a remote archipelago in southern Lake Nicaragua known for their tranquil natural beauty, vibrant naïve art community, and role as a cultural and spiritual retreat.
- 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: Insula Șerpilor Target entity description: Insula Șerpilor is a small but strategically important Black Sea island known for its geopolitical significance and maritime boundary disputes between Ukraine and Romania.
-
A.
Serpentina Island
Serpentina Island is a small island located within Guanabara Bay on the coast of Rio de Janeiro, Brazil.
-
B.
Isola
Isola is a small alpine commune in southeastern France known for its ski resort Isola 2000 and proximity to the Italian border.
-
C.
Didicas Island
Didicas Island is a small, volcanically active island in the Babuyan Island group of northern Philippines, known for having emerged from undersea eruptions in the 20th century.
-
D.
Insula Leporum
Insula Leporum is the Latin name for Margaret Island, a historic recreational island located in the Danube River in central Budapest, Hungary.
-
E.
Solentiname Islands
The Solentiname Islands are a remote archipelago in southern Lake Nicaragua known for their tranquil natural beauty, vibrant naïve art community, and role as a cultural and spiritual retreat.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Black Sea island
ⓘ
island ⓘ |
| administrativeUnit | Izmail Raion NERFINISHED ⓘ |
| area | approximately 0.17 square kilometres ⓘ |
| claimedBy | Romania (historically) NERFINISHED ⓘ |
| coordinates | approximately 45.255°N 30.204°E ⓘ |
| country | Ukraine ⓘ |
| distanceToRomanianCoast | about 45 kilometres ⓘ |
| distanceToUkrainianCoast | about 37 kilometres ⓘ |
| elevation | up to about 41 metres above sea level ⓘ |
| geopoliticalSignificance |
affects exclusive economic zone and continental shelf claims in the Black Sea
ⓘ
important for control of offshore hydrocarbon resources ⓘ |
| hasEnglishName | Snake Island NERFINISHED ⓘ |
| hasLighthouse | yes ⓘ |
| hasRomanianName | Insula Șerpilor NERFINISHED ⓘ |
| hasRussianName | Змеиный остров NERFINISHED ⓘ |
| hasUkrainianName | Острів Зміїний NERFINISHED ⓘ |
| historicalControl |
Kingdom of Romania
NERFINISHED
ⓘ
Ottoman Empire NERFINISHED ⓘ Russian Empire NERFINISHED ⓘ Soviet Union NERFINISHED ⓘ Ukraine NERFINISHED ⓘ |
| ICJJudgmentDate | 3 February 2009 ⓘ |
| ICJJudgmentEffect | limited effect on Romania–Ukraine maritime boundary ⓘ |
| involvedIn | maritime boundary dispute between Romania and Ukraine ⓘ |
| length | approximately 662 metres ⓘ |
| lighthouseBuiltBy | Ottoman Empire NERFINISHED ⓘ |
| lighthouseRebuiltBy | Russian Empire NERFINISHED ⓘ |
| locatedInBodyOfWater | Black Sea NERFINISHED ⓘ |
| locatedInRegion | northwestern Black Sea ⓘ |
| locatedNear |
Danube Delta
NERFINISHED
ⓘ
Romania NERFINISHED ⓘ Ukraine NERFINISHED ⓘ |
| maritimeDelimitationRulingBy | International Court of Justice NERFINISHED ⓘ |
| nearbyPort |
Port of Odesa
NERFINISHED
ⓘ
Port of Sulina NERFINISHED ⓘ |
| notableEvent | Ukrainian defenders’ radio message to Russian warship in February 2022 ⓘ |
| occupiedBy | Russian forces in 2022 ⓘ |
| partOf | Odesa Oblast NERFINISHED ⓘ |
| retakenBy | Ukraine in 2022 ⓘ |
| strategicImportance |
controls approaches to the Danube Delta and northwestern Black Sea shipping lanes
ⓘ
hosts military and radar installations ⓘ |
| subjectOf | case Maritime Delimitation in the Black Sea (Romania v. Ukraine) NERFINISHED ⓘ |
| transferredTo | Soviet Union in 1948 ⓘ |
| usedFor |
border guard station
ⓘ
lighthouse station ⓘ military outpost ⓘ |
| wasSiteOf | military actions during the 2022 Russian invasion of Ukraine ⓘ |
| width | approximately 440 metres ⓘ |
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: Insula Șerpilor Description of subject: Insula Șerpilor is a small but strategically important Black Sea island known for its geopolitical significance and maritime boundary disputes between Ukraine and Romania.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.