Hydra
E402079
Hydra is a small, freshwater cnidarian polyp known for its simple tubular body and remarkable ability to regenerate lost or damaged tissues.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Hydra canonical | 1 |
| Hydra oligactis | 1 |
| Hydra viridissima | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3936937 — 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: Hydra Context triple: [Hydrozoa, hasMember, Hydra]
-
A.
Hydra
Hydra is a clandestine, authoritarian terrorist organization in the Marvel universe known for its infiltration of governments and S.H.I.E.L.D. and its recurring clashes with heroes like Captain America.
-
B.
Hydra
Hydra is a widely used network login cracker designed to perform fast, automated brute-force attacks against numerous protocols and services.
-
C.
Hydra
Hydra is a music record label known for releasing works by artists such as The Fireman.
-
D.
Hydra
Hydra is a Greek island in the Saronic Gulf known for its picturesque harbor, preserved stone architecture, and ban on motor vehicles.
-
E.
Hydra
Hydra is one of Pluto’s small outer moons, discovered in 2005 and named after the many-headed serpent from Greek mythology.
- 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: Hydra Target entity description: Hydra is a small, freshwater cnidarian polyp known for its simple tubular body and remarkable ability to regenerate lost or damaged tissues.
-
A.
Hydra
Hydra is a clandestine, authoritarian terrorist organization in the Marvel universe known for its infiltration of governments and S.H.I.E.L.D. and its recurring clashes with heroes like Captain America.
-
B.
Hydra
Hydra is a Greek island in the Saronic Gulf known for its picturesque harbor, preserved stone architecture, and ban on motor vehicles.
-
C.
Hydra
Hydra is one of Pluto’s small outer moons, discovered in 2005 and named after the many-headed serpent from Greek mythology.
-
D.
Hydra
Hydra is a widely used network login cracker designed to perform fast, automated brute-force attacks against numerous protocols and services.
-
E.
Hydra
Hydra is a music record label known for releasing works by artists such as The Fireman.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
cnidarian
ⓘ
freshwater polyp ⓘ genus ⓘ |
| bodyCavity | acoelomate ⓘ |
| bodyPlan | tubular ⓘ |
| cellType | interstitial stem cells ⓘ |
| class | Hydrozoa ⓘ |
| developmentalLayer |
ectoderm
ⓘ
endoderm ⓘ |
| diet | small aquatic invertebrates ⓘ |
| excretion | diffusion through body wall ⓘ |
| family | Hydridae ⓘ |
| feedingType | carnivorous ⓘ |
| gasExchange | diffusion through body surface ⓘ |
| habitat | freshwater ⓘ |
| hasCellType |
cnidocytes
ⓘ
nematocytes ⓘ |
| hasSpecies |
Hydra
self-linksurface differs
ⓘ
surface form:
Hydra oligactis
Hydra self-linksurface differs ⓘ
surface form:
Hydra viridissima
Hydra vulgaris ⓘ |
| hasStructure |
basal disc
ⓘ
epidermis ⓘ gastrodermis ⓘ gastrovascular cavity ⓘ hypostome ⓘ mesoglea ⓘ tentacles ⓘ |
| kingdom | Animalia ⓘ |
| lifeForm | polyp ⓘ |
| locomotion |
floating
ⓘ
gliding on basal disc ⓘ somersaulting ⓘ |
| nerveSystem | diffuse nerve net ⓘ |
| notableFeature |
ability to regenerate entire body from small fragments
ⓘ
absence of senescence under laboratory conditions ⓘ high regenerative capacity ⓘ |
| order | Anthoathecata ⓘ |
| parentTaxon | Hydridae ⓘ |
| photosymbiosis | Hydra viridissima with green algae ⓘ |
| phylum | Cnidaria ⓘ |
| regenerationMechanism |
continuous stem cell proliferation
ⓘ
patterning via morphogen gradients ⓘ |
| reproduction |
asexual budding
ⓘ
sexual reproduction ⓘ |
| researchUse |
model organism for aging research
ⓘ
model organism for developmental biology ⓘ model organism for regeneration studies ⓘ |
| symmetry | radial symmetry ⓘ |
| taxonRank | genus ⓘ |
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: Hydra Description of subject: Hydra is a small, freshwater cnidarian polyp known for its simple tubular body and remarkable ability to regenerate lost or damaged tissues.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Hydra oligactis
this entity surface form:
Hydra viridissima