M2 segment
E764635
The M2 segment is the portion of the middle cerebral artery that runs within the Sylvian fissure, giving rise to branches that supply much of the lateral surface of the cerebral hemisphere.
All labels observed (1)
| Label | Occurrences |
|---|---|
| M2 segment canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8902314 — 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: M2 segment Context triple: [middle cerebral artery, hasSegment, M2 segment]
-
A.
M2
M2 is a major British motorway that connects London with the port town of Dover in Kent, serving as an important route to the Channel ports.
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B.
M2
M2 is the second line of the Warsaw Metro, running east–west across the city and connecting key districts on both sides of the Vistula River.
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C.
M2
M2 was the original name of MTV2, a U.S. cable television channel that focused on music videos and youth-oriented programming.
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D.
M2
M2 is one of the main lines of the Copenhagen Metro, connecting central Copenhagen with key districts and the airport.
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E.
M2
M2 is a boat line that operates as part of Geneva’s public transport network, providing passenger services across the city’s waters.
- 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: M2 segment Target entity description: The M2 segment is the portion of the middle cerebral artery that runs within the Sylvian fissure, giving rise to branches that supply much of the lateral surface of the cerebral hemisphere.
-
A.
M2
M2 is a major British motorway that connects London with the port town of Dover in Kent, serving as an important route to the Channel ports.
-
B.
M2
M2 is the second line of the Warsaw Metro, running east–west across the city and connecting key districts on both sides of the Vistula River.
-
C.
M2
M2 is one of the main lines of the Copenhagen Metro, connecting central Copenhagen with key districts and the airport.
-
D.
M2
M2 was the original name of MTV2, a U.S. cable television channel that focused on music videos and youth-oriented programming.
-
E.
M2
M2 is one of the main lines of the Bucharest Metro, running on a north–south axis and serving several of the city’s key residential and commercial areas.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
arterial segment
ⓘ
segment of middle cerebral artery ⓘ |
| arterialTerritoryIncludes |
Broca area region (dominant hemisphere)
NERFINISHED
ⓘ
Wernicke area region (dominant hemisphere) NERFINISHED ⓘ primary motor cortex lateral surface ⓘ primary somatosensory cortex lateral surface ⓘ |
| belongsToVascularTerritory | anterior circulation of brain ⓘ |
| clinicalSignificance |
common site of ischemic stroke
ⓘ
occlusion in dominant hemisphere may cause aphasia ⓘ occlusion in nondominant hemisphere may cause hemispatial neglect ⓘ occlusion may cause contralateral face and arm weakness ⓘ occlusion may cause contralateral sensory loss ⓘ |
| drainsInto | distal middle cerebral artery branches ⓘ |
| follows | course of Sylvian fissure ⓘ |
| givesRiseTo |
cortical branches of middle cerebral artery
ⓘ
insular branches ⓘ opercular branches ⓘ |
| hasClinicalClassification | medium vessel occlusion site in stroke literature ⓘ |
| hasDistalBoundary | M3 segment of middle cerebral artery NERFINISHED ⓘ |
| hasLaterality |
left M2 segment
ⓘ
right M2 segment ⓘ |
| hasProximalBoundary | M1 segment of middle cerebral artery NERFINISHED ⓘ |
| hasSynonym | insular segment of middle cerebral artery NERFINISHED ⓘ |
| imagedBy |
CT angiography
NERFINISHED
ⓘ
MR angiography ⓘ digital subtraction angiography ⓘ |
| isBranchOf | internal carotid artery via middle cerebral artery ⓘ |
| locatedIn |
Sylvian fissure
NERFINISHED
ⓘ
lateral sulcus ⓘ |
| partOf | middle cerebral artery NERFINISHED ⓘ |
| supplies |
inferior parietal lobule lateral part
ⓘ
insula ⓘ lateral frontal lobe ⓘ lateral orbitofrontal cortex NERFINISHED ⓘ lateral parietal lobe ⓘ lateral surface of cerebral hemisphere ⓘ lateral temporal lobe ⓘ middle temporal gyrus lateral part ⓘ postcentral gyrus lateral part ⓘ precentral gyrus lateral part ⓘ superior temporal gyrus lateral part ⓘ |
| treatedBy |
endovascular thrombectomy in eligible stroke patients
ⓘ
intravenous thrombolysis in acute ischemic stroke ⓘ |
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: M2 segment Description of subject: The M2 segment is the portion of the middle cerebral artery that runs within the Sylvian fissure, giving rise to branches that supply much of the lateral surface of the cerebral hemisphere.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.