Fifth Battle of Ypres
E431750
The Fifth Battle of Ypres was a late-1918 Allied offensive on the Western Front in World War I, aimed at pushing German forces back in Flanders during the final Hundred Days campaign.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Battle of Messines 1918 | 1 |
| Fifth Battle of Ypres canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4120640 — 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: Fifth Battle of Ypres Context triple: [Ypres, wasSiteOf, Fifth Battle of Ypres]
-
A.
Fourth Battle of Ypres
The Fourth Battle of Ypres was a World War I engagement in 1918, also known as the Battle of the Lys, in which German forces launched a major offensive against Allied positions in Flanders.
-
B.
Battle of Passchendaele
The Battle of Passchendaele was a brutal and muddy First World War offensive in 1917 near Ypres, Belgium, notorious for its massive casualties and minimal territorial gains.
-
C.
Second Battle of Ypres
The Second Battle of Ypres was a major First World War engagement in 1915, notorious as the site of the first large-scale use of poison gas on the Western Front and heavy fighting involving Allied forces including Canadian troops.
-
D.
Battle of Loos
The Battle of Loos was a major British offensive on the Western Front in 1915 during World War I, marked by the first large-scale British use of poison gas and heavy casualties for limited territorial gains.
-
E.
Battle of Polygon Wood
The Battle of Polygon Wood was a World War I engagement in 1917 in the Ypres Salient, where Australian and British forces advanced against German positions as part of the larger Third Battle of Ypres.
- 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: Fifth Battle of Ypres Target entity description: The Fifth Battle of Ypres was a late-1918 Allied offensive on the Western Front in World War I, aimed at pushing German forces back in Flanders during the final Hundred Days campaign.
-
A.
Fourth Battle of Ypres
The Fourth Battle of Ypres was a World War I engagement in 1918, also known as the Battle of the Lys, in which German forces launched a major offensive against Allied positions in Flanders.
-
B.
Battle of Passchendaele
The Battle of Passchendaele was a brutal and muddy First World War offensive in 1917 near Ypres, Belgium, notorious for its massive casualties and minimal territorial gains.
-
C.
Second Battle of Ypres
The Second Battle of Ypres was a major First World War engagement in 1915, notorious as the site of the first large-scale use of poison gas on the Western Front and heavy fighting involving Allied forces including Canadian troops.
-
D.
Battle of Loos
The Battle of Loos was a major British offensive on the Western Front in 1915 during World War I, marked by the first large-scale British use of poison gas and heavy casualties for limited territorial gains.
-
E.
Battle of Polygon Wood
The Battle of Polygon Wood was a World War I engagement in 1917 in the Ypres Salient, where Australian and British forces advanced against German positions as part of the larger Third Battle of Ypres.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
Allied offensive
ⓘ
World War I battle ⓘ battle ⓘ |
| alsoKnownAs | Battle of the Peaks of Flanders NERFINISHED ⓘ |
| belligerent |
Allied Powers
NERFINISHED
ⓘ
German Empire ⓘ |
| casualties | thousands of casualties on both sides ⓘ |
| combatant |
Belgium
NERFINISHED
ⓘ
France NERFINISHED ⓘ United Kingdom NERFINISHED ⓘ |
| conflict | World War I ⓘ |
| context | Allied push to end the war in 1918 ⓘ |
| coordinatedWith | other Hundred Days Offensive operations ⓘ |
| countryInvolved | Germany ⓘ |
| endTime | 1918-10-02 ⓘ |
| followedBy | subsequent Allied advances in Flanders ⓘ |
| front | Allied Western Front NERFINISHED ⓘ |
| goal |
to advance Allied lines on the Western Front
ⓘ
to push German forces back in Flanders ⓘ |
| historicalPeriod | Hundred Days campaign NERFINISHED ⓘ |
| involvedMilitaryBranch |
Belgian Army
NERFINISHED
ⓘ
British Army NERFINISHED ⓘ French Army NERFINISHED ⓘ German Army NERFINISHED ⓘ |
| location |
Belgium
NERFINISHED
ⓘ
Flanders NERFINISHED ⓘ Ypres salient NERFINISHED ⓘ |
| namedAfter | Ypres NERFINISHED ⓘ |
| opponent | German Army NERFINISHED ⓘ |
| opposingFront | German Western Front NERFINISHED ⓘ |
| outcome | contributed to overall collapse of German positions in late 1918 ⓘ |
| partOf |
Hundred Days Offensive
NERFINISHED
ⓘ
Western Front in World War I NERFINISHED ⓘ final Allied offensives of World War I ⓘ final phase of World War I ⓘ |
| precededBy | Fourth Battle of Ypres NERFINISHED ⓘ |
| result |
Allied victory
ⓘ
German forces withdrew to new defensive positions ⓘ |
| startTime | 1918-09-28 ⓘ |
| strategicObjective | to break German defensive positions in Flanders ⓘ |
| temporalLocation | late 1918 ⓘ |
| theatreOfWar | Western Front NERFINISHED ⓘ |
| typeOfAction | combined infantry and artillery offensive ⓘ |
| year | 1918 ⓘ |
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: Fifth Battle of Ypres Description of subject: The Fifth Battle of Ypres was a late-1918 Allied offensive on the Western Front in World War I, aimed at pushing German forces back in Flanders during the final Hundred Days campaign.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Battle of Messines 1918