Shannon navigation system
E607039
The Shannon navigation system is a network of navigable waterways, locks, and channels along Ireland’s River Shannon and its connected lakes, enabling inland boating and transport.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Shannon navigation system canonical | 2 |
| Shannon–Erne navigation system | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6638575 — 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: Shannon navigation system Context triple: [Lough Ree, partOf, Shannon navigation system]
-
A.
Gee navigation system
The Gee navigation system was an early British radio navigation aid used during World War II to help Allied aircraft determine their position and improve bombing accuracy.
-
B.
Tsiklon navigation system
The Tsiklon navigation system was an early Soviet satellite-based radio navigation network that preceded and was eventually replaced by the more advanced GLONASS global navigation satellite system.
-
C.
Knickebein radio navigation system
The Knickebein radio navigation system was a World War II German Luftwaffe beam-guidance technology used to direct bombers accurately to their targets at night and in poor visibility.
-
D.
LORAN
LORAN is a long-range terrestrial radio navigation system originally developed for maritime and aviation positioning before the advent of satellite-based GPS.
-
E.
Thomson Marconi Sonar
Thomson Marconi Sonar was a major European defense electronics company specializing in advanced sonar and underwater warfare systems for naval applications.
- 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: Shannon navigation system Target entity description: The Shannon navigation system is a network of navigable waterways, locks, and channels along Ireland’s River Shannon and its connected lakes, enabling inland boating and transport.
-
A.
Gee navigation system
The Gee navigation system was an early British radio navigation aid used during World War II to help Allied aircraft determine their position and improve bombing accuracy.
-
B.
Tsiklon navigation system
The Tsiklon navigation system was an early Soviet satellite-based radio navigation network that preceded and was eventually replaced by the more advanced GLONASS global navigation satellite system.
-
C.
Knickebein radio navigation system
The Knickebein radio navigation system was a World War II German Luftwaffe beam-guidance technology used to direct bombers accurately to their targets at night and in poor visibility.
-
D.
LORAN
LORAN is a long-range terrestrial radio navigation system originally developed for maritime and aviation positioning before the advent of satellite-based GPS.
-
E.
Thomson Marconi Sonar
Thomson Marconi Sonar was a major European defense electronics company specializing in advanced sonar and underwater warfare systems for naval applications.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
canalized river system
ⓘ
inland waterway ⓘ waterway navigation system ⓘ |
| connectsToWaterway |
Grand Canal
ⓘ
Royal Canal ⓘ Shannon–Erne Waterway ⓘ |
| connectsWaterbody |
Lough Allen
ⓘ
Lough Derg ⓘ Lough Ree ⓘ River Shannon estuary ⓘ |
| country | Republic of Ireland ⓘ |
| follows | River Shannon ⓘ |
| hasCharting | official navigation guides and charts ⓘ |
| hasLockOperation |
mostly automatic locks
ⓘ
some manual locks ⓘ |
| hasRegulator |
Irish government
ⓘ
linked to:
Government of Ireland
|
| hasSafetyRequirement |
lifejackets on board
ⓘ
navigation permits ⓘ |
| historicalUse |
inland freight transport
ⓘ
passenger transport ⓘ |
| includesFeature |
canals
ⓘ
harbours ⓘ jetties ⓘ locks ⓘ navigation channels ⓘ sluices ⓘ weirs ⓘ |
| locatedIn | Ireland ⓘ |
| managedBy | Waterways Ireland ⓘ |
| navigationType |
non-tidal inland navigation (upper reaches)
ⓘ
tidal navigation (estuary section) ⓘ |
| openTo |
hire cruisers
ⓘ
pleasure craft ⓘ private boats ⓘ |
| primaryUse | recreational boating ⓘ |
| secondaryUse |
angling
ⓘ
tourism ⓘ water sports ⓘ |
| supportsVesselType |
barges
ⓘ
cruisers ⓘ narrowboats ⓘ small passenger vessels ⓘ |
| terminusNear |
Athlone
ⓘ
Carrick-on-Shannon ⓘ Killaloe ⓘ Limerick ⓘ Portumna ⓘ |
| usesWatercourse | River Shannon ⓘ |
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: Shannon navigation system Description of subject: The Shannon navigation system is a network of navigable waterways, locks, and channels along Ireland’s River Shannon and its connected lakes, enabling inland boating and transport.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Shannon navigation system