United Kingdom–San Francisco grain trade
E301024
The United Kingdom–San Francisco grain trade was a late 19th- and early 20th-century maritime route in which large sailing ships carried grain from California to Britain, exemplifying the era’s long-distance wind-powered commercial shipping.
All labels observed (1)
| Label | Occurrences |
|---|---|
| United Kingdom–San Francisco grain trade canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2822703 — 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: United Kingdom–San Francisco grain trade Context triple: [Balclutha, primaryTradeRoutes, United Kingdom–San Francisco grain trade]
-
A.
Lettre sur la liberté du commerce des grains
Lettre sur la liberté du commerce des grains is an influential 18th-century economic treatise by Turgot advocating the free trade of grain and criticizing government intervention in grain markets.
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B.
Board of Trade of the United Kingdom
The Board of Trade of the United Kingdom was a government body responsible for overseeing and promoting British commerce, industry, and economic policy, particularly during the 18th and 19th centuries.
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C.
Essay on the External Corn Trade
Essay on the External Corn Trade is an influential early 19th-century economic treatise analyzing international trade and agricultural policy, particularly the effects of corn laws and grain imports on prices and national welfare.
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D.
Red River trade
Red River trade refers to the historical commerce and transportation network along the Red River that shaped the economic and cultural development of the Ark-La-Tex region.
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E.
La Unión
La Unión is a Chilean city in the Los Ríos Region known for its agricultural activities, dairy production, and role as a local commercial center.
- 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: United Kingdom–San Francisco grain trade Target entity description: The United Kingdom–San Francisco grain trade was a late 19th- and early 20th-century maritime route in which large sailing ships carried grain from California to Britain, exemplifying the era’s long-distance wind-powered commercial shipping.
-
A.
Lettre sur la liberté du commerce des grains
Lettre sur la liberté du commerce des grains is an influential 18th-century economic treatise by Turgot advocating the free trade of grain and criticizing government intervention in grain markets.
-
B.
Board of Trade of the United Kingdom
The Board of Trade of the United Kingdom was a government body responsible for overseeing and promoting British commerce, industry, and economic policy, particularly during the 18th and 19th centuries.
-
C.
Essay on the External Corn Trade
Essay on the External Corn Trade is an influential early 19th-century economic treatise analyzing international trade and agricultural policy, particularly the effects of corn laws and grain imports on prices and national welfare.
-
D.
Red River trade
Red River trade refers to the historical commerce and transportation network along the Red River that shaped the economic and cultural development of the Ark-La-Tex region.
-
E.
La Unión
La Unión is a Chilean city in the Los Ríos Region known for its agricultural activities, dairy production, and role as a local commercial center.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
grain trade
ⓘ
historical trade route ⓘ maritime trade route ⓘ |
| characterizedBy |
long-distance voyages
ⓘ
round-the-Cape passages ⓘ wind-powered commercial shipping ⓘ |
| commodityType | bulk cargo ⓘ |
| declineCause |
changes in global grain sourcing
ⓘ
opening of the Panama Canal ⓘ rise of steamships ⓘ |
| destinationCountry | United Kingdom ⓘ |
| destinationRegion |
United Kingdom
ⓘ
surface form:
Britain
|
| economicRole |
export of Californian grain to British markets
ⓘ
supply of foodstuffs to the United Kingdom ⓘ |
| era |
early 20th century
ⓘ
late 19th century ⓘ |
| geographicScope |
Cape Horn sea route
ⓘ
surface form:
California–Cape Horn–United Kingdom route
|
| historicalPeriod | pre–World War I era ⓘ |
| mainCargo |
grain
ⓘ
wheat ⓘ |
| navigatedOcean |
Atlantic Ocean
ⓘ
Pacific Ocean ⓘ |
| navigatedWaterway |
Cape Horn
ⓘ
Strait of Magellan ⓘ |
| navigationChallenge |
heavy seas around Cape Horn
ⓘ
strong westerly winds in the Southern Ocean ⓘ |
| notableFeature |
use of large steel and iron sailing ships in a steamship era
ⓘ
very long sailing distances without coaling stops ⓘ |
| originCountry |
United States of America
ⓘ
surface form:
United States
|
| originPort | San Francisco ⓘ |
| partOf |
age of sail
ⓘ
global grain trade ⓘ |
| propulsionType |
sail
ⓘ
wind power ⓘ |
| relatedTrade |
Australia–United Kingdom grain trade
ⓘ
Pacific grain trade ⓘ |
| safetyRisk |
severe storms off Cape Horn
ⓘ
shipwrecks ⓘ |
| tradeDirection |
California to Britain
ⓘ
west-to-east ⓘ |
| typicalCargoDirection | grain outbound from San Francisco ⓘ |
| typicalReturnCargo | ballast or manufactured goods ⓘ |
| usedVesselType |
barque
ⓘ
clipper ship ⓘ full-rigged ship ⓘ sailing ship ⓘ windjammer ⓘ |
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: United Kingdom–San Francisco grain trade Description of subject: The United Kingdom–San Francisco grain trade was a late 19th- and early 20th-century maritime route in which large sailing ships carried grain from California to Britain, exemplifying the era’s long-distance wind-powered commercial shipping.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.