Hippopotamus
E258876
Hippopotamus is a large, mostly herbivorous semi-aquatic mammal native to sub-Saharan Africa, known for its barrel-shaped body, massive jaws, and aggressive behavior.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Hippopotamus amphibius | 5 |
| Hippopotamus canonical | 1 |
| The Hippopotamus | 1 |
| hippopotamus | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2342344 — 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: Hippopotamus Context triple: [Hippopotamidae, typeGenus, Hippopotamus]
-
A.
Nile crocodile
The Nile crocodile is a large and aggressive African crocodilian known for inhabiting rivers, lakes, and wetlands and being one of the continent’s most formidable predators.
-
B.
Potamochoerus porcus
Potamochoerus porcus, commonly known as the red river hog, is a colorful, medium-sized wild pig native to the forests and swamps of West and Central Africa.
-
C.
Giraffa
Giraffa is a genus of large African mammals best known for their extremely long necks and legs, comprising the various species of giraffes.
-
D.
Syncerus caffer
Syncerus caffer, commonly known as the African buffalo, is a large, robust bovine native to sub-Saharan Africa and noted for its formidable horns and unpredictable temperament.
-
E.
Pan paniscus
Pan paniscus, commonly known as the bonobo, is a great ape species native to the Congo Basin in Central Africa, noted for its matriarchal social structure, high intelligence, and relatively peaceful, cooperative behavior.
- 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: Hippopotamus Target entity description: Hippopotamus is a large, mostly herbivorous semi-aquatic mammal native to sub-Saharan Africa, known for its barrel-shaped body, massive jaws, and aggressive behavior.
-
A.
Nile crocodile
The Nile crocodile is a large and aggressive African crocodilian known for inhabiting rivers, lakes, and wetlands and being one of the continent’s most formidable predators.
-
B.
Potamochoerus porcus
Potamochoerus porcus, commonly known as the red river hog, is a colorful, medium-sized wild pig native to the forests and swamps of West and Central Africa.
-
C.
Giraffa
Giraffa is a genus of large African mammals best known for their extremely long necks and legs, comprising the various species of giraffes.
-
D.
Syncerus caffer
Syncerus caffer, commonly known as the African buffalo, is a large, robust bovine native to sub-Saharan Africa and noted for its formidable horns and unpredictable temperament.
-
E.
Pan paniscus
Pan paniscus, commonly known as the bonobo, is a great ape species native to the Congo Basin in Central Africa, noted for its matriarchal social structure, high intelligence, and relatively peaceful, cooperative behavior.
- F. None of above. chosen
Statements (53)
| Predicate | Object |
|---|---|
| instanceOf |
herbivorous mammal
ⓘ
mammal ⓘ megafauna ⓘ semi-aquatic mammal ⓘ |
| activityPattern | nocturnal grazer ⓘ |
| behavior | aggressive ⓘ |
| binomialName |
Hippopotamus
self-linksurface differs
ⓘ
surface form:
Hippopotamus amphibius
|
| bodyShape | barrel-shaped body ⓘ |
| canHoldBreathFor | about 5 minutes ⓘ |
| class | Mammalia ⓘ |
| commonName |
hippo
ⓘ
hippopotamus ⓘ |
| conservationStatus | Vulnerable ⓘ |
| diet | herbivorous ⓘ |
| family | Hippopotamidae ⓘ |
| genus | Hippopotamus ⓘ |
| gestationPeriod | about 8 months ⓘ |
| groupName |
bloat
ⓘ
herd ⓘ pod ⓘ |
| habitat |
lakes
ⓘ
rivers ⓘ slow-moving freshwater bodies ⓘ swamps ⓘ |
| hasAdaptation | eyes ears and nostrils on top of head ⓘ |
| hasFeature |
large canine teeth
ⓘ
large mouth ⓘ massive jaws ⓘ nearly hairless body ⓘ short legs ⓘ thick skin ⓘ |
| isDangerousToHumans | yes ⓘ |
| isLessTerritorial | on land ⓘ |
| isSecondLargest | land mammal by weight after elephants ⓘ |
| isTerritorial | in water ⓘ |
| kingdom | Animalia ⓘ |
| lifespanInCaptivity | over 50 years ⓘ |
| lifespanInWild | about 40 years ⓘ |
| nativeTo |
Sub-Saharan Africa
ⓘ
surface form:
sub-Saharan Africa
|
| offspringName | calf ⓘ |
| order | Artiodactyla ⓘ |
| phylum | Chordata ⓘ |
| primaryFood | grasses ⓘ |
| reproduction | viviparous ⓘ |
| secretes | reddish oily fluid for skin protection ⓘ |
| skinColor | grayish ⓘ |
| socialStructure | group-living ⓘ |
| taxonRank | species ⓘ |
| threat |
habitat loss
ⓘ
illegal hunting ⓘ poaching for ivory-like teeth ⓘ |
| timeInWater | daytime ⓘ |
| timeOnLand | night ⓘ |
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: Hippopotamus Description of subject: Hippopotamus is a large, mostly herbivorous semi-aquatic mammal native to sub-Saharan Africa, known for its barrel-shaped body, massive jaws, and aggressive behavior.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Hippopotamus amphibius
this entity surface form:
The Hippopotamus
this entity surface form:
hippopotamus
this entity surface form:
Hippopotamus amphibius
this entity surface form:
Hippopotamus amphibius
this entity surface form:
Hippopotamus amphibius
this entity surface form:
Hippopotamus amphibius