Lake Bracciano
E67524
Lake Bracciano is a large volcanic lake in central Italy, northwest of Rome, known for its clear waters, scenic surroundings, and role as a major source of the capital’s drinking water.
All labels observed (7)
| Label | Occurrences |
|---|---|
| Lake Bracciano canonical | 15 |
| Bracciano | 1 |
| Bracciano Lake | 1 |
| Bracciano Lake area | 1 |
| Bracciano lake district | 1 |
| Bracciano-Martignano basin | 1 |
| Lake Bracciano basin | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T540421 — 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: Lake Bracciano Context triple: [Lazio, containsLake, Lake Bracciano]
-
A.
Lake Como, Italy
Lake Como, Italy is a picturesque glacial lake in northern Italy renowned for its dramatic alpine scenery, historic villas, and status as a luxury retreat for celebrities and travelers.
-
B.
Tremezzo
Tremezzo is a picturesque lakeside town in northern Italy’s Lombardy region, renowned for its historic villas, gardens, and scenic views over Lake Como.
-
C.
Tonetta Lake
Tonetta Lake is a small hamlet in the Town of Southeast in Putnam County, New York, known for its residential community centered around the nearby lake.
-
D.
Lake Annecy
Lake Annecy is a picturesque alpine lake in southeastern France, renowned for its clear turquoise waters, surrounding mountains, and popular recreational activities.
-
E.
Lake Managua
Lake Managua is a large freshwater lake in western Nicaragua, notable for bordering the capital city of Managua and being one of Central America’s major inland water bodies.
- 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: Lake Bracciano Target entity description: Lake Bracciano is a large volcanic lake in central Italy, northwest of Rome, known for its clear waters, scenic surroundings, and role as a major source of the capital’s drinking water.
-
A.
Lake Como, Italy
Lake Como, Italy is a picturesque glacial lake in northern Italy renowned for its dramatic alpine scenery, historic villas, and status as a luxury retreat for celebrities and travelers.
-
B.
Tremezzo
Tremezzo is a picturesque lakeside town in northern Italy’s Lombardy region, renowned for its historic villas, gardens, and scenic views over Lake Como.
-
C.
Tonetta Lake
Tonetta Lake is a small hamlet in the Town of Southeast in Putnam County, New York, known for its residential community centered around the nearby lake.
-
D.
Lake Annecy
Lake Annecy is a picturesque alpine lake in southeastern France, renowned for its clear turquoise waters, surrounding mountains, and popular recreational activities.
-
E.
Lake Managua
Lake Managua is a large freshwater lake in western Nicaragua, notable for bordering the capital city of Managua and being one of Central America’s major inland water bodies.
- F. None of above. chosen
Statements (36)
| Predicate | Object |
|---|---|
| instanceOf |
lake
ⓘ
volcanic lake ⓘ |
| basinCountry | Italy ⓘ |
| catchmentArea |
Lake Bracciano
self-linksurface differs
ⓘ
surface form:
Bracciano-Martignano basin
|
| country | Italy ⓘ |
| elevationAboveSeaLevel | about 164 metres ⓘ |
| formedBy | collapse of a volcanic caldera ⓘ |
| formedIn | Bracciano volcanic complex ⓘ |
| geologicalType | crater lake ⓘ |
| hasIsland | no significant natural islands ⓘ |
| knownFor |
clear waters
ⓘ
scenic surroundings ⓘ water quality protection ⓘ |
| locatedIn |
Lazio
ⓘ
central Italy ⓘ |
| locatedNorthwestOf | Rome ⓘ |
| maximumDepth | about 160 metres ⓘ |
| motorboatRestrictions | yes ⓘ |
| nearbyLake | Lake Martignano ⓘ |
| nearbySettlement |
Anguillara Sabazia
ⓘ
Bracciano ⓘ Trevignano Romano ⓘ |
| origin | volcanic ⓘ |
| outflow | Arrone River ⓘ |
| partOf | Metropolitan City of Rome Capital ⓘ |
| primaryUse | drinking water supply for Rome ⓘ |
| protectedAreaStatus | partly included in a regional natural park ⓘ |
| reasonForRestrictions | protection of drinking water quality ⓘ |
| recreationalActivity |
kayaking
ⓘ
sailing ⓘ swimming ⓘ windsurfing ⓘ |
| region |
Province of Rome
ⓘ
surface form:
Province of Rome (historical)
|
| surfaceArea | about 57 square kilometres ⓘ |
| tourism | popular day-trip destination from Rome ⓘ |
| waterType | freshwater ⓘ |
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: Lake Bracciano Description of subject: Lake Bracciano is a large volcanic lake in central Italy, northwest of Rome, known for its clear waters, scenic surroundings, and role as a major source of the capital’s drinking water.
Referenced by (21)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Bracciano-Martignano basin
this entity surface form:
Bracciano Lake
this entity surface form:
Lake Bracciano basin
this entity surface form:
Bracciano
this entity surface form:
Bracciano lake district
subject surface form:
Lazio
this entity surface form:
Bracciano Lake area