eraOfOperation

P28914
predicate

Indicates the time period or span of years during which an entity was active or in operation.

All labels observed (9)

Label Occurrences
eraOfOperation canonical 35
operationalEra 29
operatedEra 11

Description generation (PDg)

The one-sentence description above was generated by prompting gpt-5.1 with the predicate name and this instruction.

Instruction
Given a predicate that represents a relationship or action between entities, generate a one-sentence description explaining its meaning.  
# Instructions
Focus on describing the relationship, not the entities themselves. 
# Response Format
Begin the description with \' Indicates...\'
Input
Predicate: eraOfOperation
Generated description
Indicates the time period or span of years during which an entity was active or in operation.

Sample triples (85)

Subject Object
Southern Pacific Cab Forward locomotive early 20th century
Southern Pacific Cab Forward locomotive mid 20th century
Kalem Company early American cinema
Pan Am Railways late 20th century via predicate surface "operatedEra"
Pan Am Railways early 21st century via predicate surface "operatedEra"
Three Brothers shipwreck late 19th–early 20th century
Aéropostale early commercial aviation era via predicate surface "operationalEra"
Trans World Airlines 20th century via predicate surface "operatedEra"
Cleveland Stadium 1930s–1990s
Eastern Air Lines 20th century via predicate surface "operatedEra"
Jura-Simplon-Bahn pre-nationalization era of Swiss railways via predicate surface "operationalEra"
Oak Ridge Gaseous Diffusion Plant World War II
Oak Ridge Gaseous Diffusion Plant Cold War
OV-099 1983–1986 via predicate surface "operationalEra"
Mission Santa Cruz late 18th century to 19th century via predicate surface "eraOfOperationAsMission"
Caravelle
surface form: Sud Aviation Caravelle
1950s via predicate surface "operationalEra"
Caravelle
surface form: Sud Aviation Caravelle
1960s via predicate surface "operationalEra"
Caravelle
surface form: Sud Aviation Caravelle
1970s via predicate surface "operationalEra"
Caravelle
surface form: Sud Aviation Caravelle
1980s via predicate surface "operationalEra"
SAS-3 1970s via predicate surface "epochOfOperation"
Flying Boxcar
surface form: Fairchild C-119 Flying Boxcar
late 1940s via predicate surface "operationalEra"
Flying Boxcar
surface form: Fairchild C-119 Flying Boxcar
1950s via predicate surface "operationalEra"
Flying Boxcar
surface form: Fairchild C-119 Flying Boxcar
1960s via predicate surface "operationalEra"
royal garrison of the Bastille 17th century
royal garrison of the Bastille 18th century
Gallery of Modern Art
surface form: Gallery of Modern Art (New York City)
1960s
Guilford Rail System late 20th century via predicate surface "operatedEra"
Guilford Rail System early 21st century via predicate surface "operatedEra"
Ilyushin Il-12 post-World War II
Main Ring 1970s
Main Ring 1980s
Main Ring 1990s
Coyote Tango early Kaiju War via predicate surface "operationalEra"
Norfolk and Western Class J mid-20th century
Charity Hospital
surface form: Charity Hospital (Blackwell's Island)
before modern welfare state in the United States
RocketMotorOne early 2000s via predicate surface "operationalEra"
C2 Pictures early 2000s via predicate surface "eraOfMainActivity"
Rastar late 20th century via predicate surface "operationalEra"
São Paulo to Paris late 20th century via predicate surface "operatedEra"
São Paulo to Paris early 21st century via predicate surface "operatedEra"
Handley Page HP.42 airliner
surface form: Handley Page HP.42
early 1930s via predicate surface "operationalEra"
Handley Page HP.42 airliner
surface form: Handley Page HP.42
1930s via predicate surface "operationalEra"
Brown Telephone Company early 20th century
Oslo Airport, Fornebu World War II period NERFINISHED
Oslo Airport, Fornebu post-war period
Oslo Airport, Fornebu Cold War era NERFINISHED
Oslo Airport, Fornebu late 20th century
Anglo-Amalgamated Film Distributors 20th century via predicate surface "operationalEra"
Mount Lowe Railway historical area late 19th and early 20th centuries via predicate surface "eraOfOriginalOperation"
Handley Page Herald Cold War era