Lighthouse of Alexandria
E24539
The Lighthouse of Alexandria was an ancient marvel of engineering and one of the Seven Wonders of the World, serving as a towering beacon for ships approaching the harbor of Alexandria, Egypt.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Lighthouse of Alexandria canonical | 11 |
| Pharos | 2 |
| Eastern Harbour of Alexandria | 1 |
| Pharos of Alexandria | 1 |
| towers of Alexandria | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T144302 — 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: Lighthouse of Alexandria Context triple: [Alexandria, knownFor, Lighthouse of Alexandria]
-
A.
Clock Tower of Rhodes
The Clock Tower of Rhodes is a historic landmark in the medieval city of Rhodes, offering panoramic views of the old town and reflecting the island’s blend of Byzantine, Ottoman, and Italian architectural influences.
-
B.
Temple of Philae
The Temple of Philae is an ancient Egyptian temple complex dedicated primarily to the goddess Isis, renowned for its elegant Ptolemaic architecture and its relocation to Agilkia Island to protect it from flooding by the Aswan High Dam.
-
C.
Temple of Dendur
The Temple of Dendur is an ancient Egyptian sandstone temple, built by the Roman emperor Augustus around 15 BCE and now prominently displayed in New York’s Metropolitan Museum of Art.
-
D.
Temple of Kalabsha
The Temple of Kalabsha is a large, well-preserved ancient Egyptian Nubian temple dedicated primarily to the god Mandulis, relocated in the 1960s to protect it from flooding caused by the Aswan High Dam.
-
E.
Great Sphinx of Giza
The Great Sphinx of Giza is an ancient colossal limestone statue with a lion’s body and a human head, regarded as one of Egypt’s most iconic and enigmatic monuments.
- 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: Lighthouse of Alexandria Target entity description: The Lighthouse of Alexandria was an ancient marvel of engineering and one of the Seven Wonders of the World, serving as a towering beacon for ships approaching the harbor of Alexandria, Egypt.
-
A.
Clock Tower of Rhodes
The Clock Tower of Rhodes is a historic landmark in the medieval city of Rhodes, offering panoramic views of the old town and reflecting the island’s blend of Byzantine, Ottoman, and Italian architectural influences.
-
B.
Temple of Philae
The Temple of Philae is an ancient Egyptian temple complex dedicated primarily to the goddess Isis, renowned for its elegant Ptolemaic architecture and its relocation to Agilkia Island to protect it from flooding by the Aswan High Dam.
-
C.
Temple of Dendur
The Temple of Dendur is an ancient Egyptian sandstone temple, built by the Roman emperor Augustus around 15 BCE and now prominently displayed in New York’s Metropolitan Museum of Art.
-
D.
Temple of Kalabsha
The Temple of Kalabsha is a large, well-preserved ancient Egyptian Nubian temple dedicated primarily to the god Mandulis, relocated in the 1960s to protect it from flooding caused by the Aswan High Dam.
-
E.
Great Sphinx of Giza
The Great Sphinx of Giza is an ancient colossal limestone statue with a lion’s body and a human head, regarded as one of Egypt’s most iconic and enigmatic monuments.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Seven Wonders of the Ancient World
ⓘ
ancient lighthouse ⓘ architectural structure ⓘ |
| approximateCompletion | around 280 BC ⓘ |
| approximateRankByHeight | among tallest structures after the Great Pyramid of Giza ⓘ |
| architecturalStyle | Hellenistic architecture ⓘ |
| associatedWithCityFoundedBy | Alexander the Great ⓘ |
| builtDuringReignOf | Ptolemy II Philadelphus ⓘ |
| commissionedBy |
Ptolemaic rulers of Egypt
ⓘ
linked to:
Ptolemaic Kingdom
|
| constructionStart | 3rd century BC ⓘ |
| continent | Africa ⓘ |
| country |
Ptolemaic Kingdom of Egypt
ⓘ
linked to:
Ptolemaic Kingdom
|
| culturalSignificance |
symbol of Alexandria
ⓘ
symbol of maritime power ⓘ |
| destroyedBy | earthquakes ⓘ |
| destructionPeriod | between 10th and 14th centuries AD ⓘ |
| estimatedHeight |
100 meters
ⓘ
120 meters ⓘ approximately 110 meters ⓘ |
| functionedAs |
daymark
ⓘ
nighttime beacon ⓘ |
| gaveRiseToTerm | pharos (meaning lighthouse) ⓘ |
| hasPart |
cylindrical upper section
ⓘ
lantern at the top ⓘ octagonal middle section ⓘ square base ⓘ |
| heritageStatus | archaeological remains underwater ⓘ |
| influenced | design of later lighthouses ⓘ |
| knownFrom |
ancient literary sources
ⓘ
medieval Arabic descriptions ⓘ |
| listedIn | Seven Wonders of the Ancient World ⓘ |
| locatedIn |
Alexandria
ⓘ
linked to:
Alexandria, Egypt
Egypt ⓘ |
| locatedOn | Pharos Island ⓘ |
| materialUsed |
light-colored stone blocks
ⓘ
stone ⓘ |
| namedAfter | Pharos Island ⓘ |
| nearbyBodyOfWater | Mediterranean Sea ⓘ |
| notableFeature | one of the tallest man-made structures of the ancient world ⓘ |
| overlooks |
Harbor of Alexandria
ⓘ
linked to:
Port of Alexandria
|
| purpose |
aid to navigation
ⓘ
harbor beacon ⓘ |
| status | destroyed ⓘ |
| surveyedBy | underwater archaeologists in Alexandria harbor ⓘ |
| usedLightSource |
fire
ⓘ
reflective mirror ⓘ |
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: Lighthouse of Alexandria Description of subject: The Lighthouse of Alexandria was an ancient marvel of engineering and one of the Seven Wonders of the World, serving as a towering beacon for ships approaching the harbor of Alexandria, Egypt.
Referenced by (16)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Lighthouse of Alexandria
linked to: Lighthouse of Alexandria
subject linked to:
Proteus
linked to: Lighthouse of Alexandria
subject linked to:
fortifications of Alexandria
linked to: Lighthouse of Alexandria
linked to: Lighthouse of Alexandria