MOPAC
E651178
MOPAC is the reporting mark used by the Missouri Pacific Railroad, a major former U.S. Class I railroad that operated across the midwestern and southwestern United States.
All labels observed (1)
| Label | Occurrences |
|---|---|
| MOPAC canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7248775 — 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: MOPAC Context triple: [MoPac, reportingMarks, MOPAC]
-
A.
MOPAC
MOPAC is the strategic oversight body responsible for holding the Metropolitan Police Service in London to account and setting policing priorities on behalf of the Mayor.
-
B.
Extended Hückel method
The Extended Hückel method is a semi-empirical quantum chemistry approach developed by Roald Hoffmann to approximate molecular electronic structure and bonding using simplified orbital interactions.
-
C.
NWChem
NWChem is an open-source, high-performance computational chemistry software package designed for large-scale molecular simulations and electronic structure calculations on parallel computing architectures.
-
D.
CP2K
CP2K is an open-source computational chemistry and solid-state physics software package widely used for atomistic simulations of materials, liquids, and molecular systems.
-
E.
WIEN2k
WIEN2k is a computational physics software package that performs electronic structure calculations of solids using density functional theory and the full-potential (linearized) augmented plane-wave method.
- 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: MOPAC Target entity description: MOPAC is the reporting mark used by the Missouri Pacific Railroad, a major former U.S. Class I railroad that operated across the midwestern and southwestern United States.
-
A.
MOPAC
MOPAC is the strategic oversight body responsible for holding the Metropolitan Police Service in London to account and setting policing priorities on behalf of the Mayor.
-
B.
Extended Hückel method
The Extended Hückel method is a semi-empirical quantum chemistry approach developed by Roald Hoffmann to approximate molecular electronic structure and bonding using simplified orbital interactions.
-
C.
NWChem
NWChem is an open-source, high-performance computational chemistry software package designed for large-scale molecular simulations and electronic structure calculations on parallel computing architectures.
-
D.
CP2K
CP2K is an open-source computational chemistry and solid-state physics software package widely used for atomistic simulations of materials, liquids, and molecular systems.
-
E.
WIEN2k
WIEN2k is a computational physics software package that performs electronic structure calculations of solids using density functional theory and the full-potential (linearized) augmented plane-wave method.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
rail transport identifier
ⓘ
railway reporting mark ⓘ |
| associatedRegion |
Midwestern United States
NERFINISHED
ⓘ
Southwestern United States NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| fullNameOfRailroad | Missouri Pacific Railroad NERFINISHED ⓘ |
| identifiesAssetsOf | Missouri Pacific Railroad rolling stock ⓘ |
| industry | rail transport ⓘ |
| locatedInJurisdiction |
Arkansas
NERFINISHED
ⓘ
Colorado NERFINISHED ⓘ Illinois NERFINISHED ⓘ Iowa NERFINISHED ⓘ Kansas NERFINISHED ⓘ Louisiana NERFINISHED ⓘ Missouri NERFINISHED ⓘ Nebraska NERFINISHED ⓘ New Mexico NERFINISHED ⓘ Oklahoma NERFINISHED ⓘ Texas NERFINISHED ⓘ |
| operatorType |
freight railroad
ⓘ
passenger railroad ⓘ |
| railroadAbbreviationOf | MoPac NERFINISHED ⓘ |
| railroadClass | Class I railroad ⓘ |
| railroadNetworkPartOf | Missouri Pacific system NERFINISHED ⓘ |
| railroadPredecessorOf | Union Pacific Railroad NERFINISHED ⓘ |
| reportingMarkFor | Missouri Pacific Railroad NERFINISHED ⓘ |
| status | former ⓘ |
| usedBy | Missouri Pacific Railroad NERFINISHED ⓘ |
| usedFor |
freight cars
ⓘ
locomotives ⓘ |
| usedIn | North American freight car reporting mark system NERFINISHED ⓘ |
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: MOPAC Description of subject: MOPAC is the reporting mark used by the Missouri Pacific Railroad, a major former U.S. Class I railroad that operated across the midwestern and southwestern United States.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.