WC-135
E616955
The WC-135 is a specialized U.S. Air Force reconnaissance aircraft, nicknamed the "Constant Phoenix," designed to collect and analyze atmospheric samples for detecting nuclear explosions.
All labels observed (3)
| Label | Occurrences |
|---|---|
| WC-135 canonical | 2 |
| Boeing WC-135 | 1 |
| WC-135 Constant Phoenix | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6728061 — 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: WC-135 Context triple: [Boeing KC-135 Stratotanker, variant, WC-135]
-
A.
Boeing RC-135W Rivet Joint
The Boeing RC-135W Rivet Joint is a highly modified reconnaissance aircraft used primarily for signals intelligence gathering and electronic surveillance operations.
-
B.
Lockheed EC-130H Compass Call
The Lockheed EC-130H Compass Call is a heavily modified C-130 Hercules aircraft used by the U.S. Air Force for tactical airborne electronic warfare and communications jamming operations.
-
C.
Boeing E-7 Wedgetail
The Boeing E-7 Wedgetail is an airborne early warning and control (AEW&C) aircraft equipped with advanced radar and battle management systems to provide surveillance, command, and control capabilities.
-
D.
E-3F Sentry AWACS
The E-3F Sentry AWACS is an airborne early warning and control aircraft equipped with a distinctive rotating radar dome, used for long-range airspace surveillance, command, and battle management.
-
E.
A-50 AWACS
The A-50 AWACS is a Soviet/Russian airborne early warning and control aircraft based on the Il-76 airframe, equipped with a large radar dome to detect and track aerial targets and coordinate air operations.
- 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: WC-135 Target entity description: The WC-135 is a specialized U.S. Air Force reconnaissance aircraft, nicknamed the "Constant Phoenix," designed to collect and analyze atmospheric samples for detecting nuclear explosions.
-
A.
Boeing RC-135W Rivet Joint
The Boeing RC-135W Rivet Joint is a highly modified reconnaissance aircraft used primarily for signals intelligence gathering and electronic surveillance operations.
-
B.
Lockheed EC-130H Compass Call
The Lockheed EC-130H Compass Call is a heavily modified C-130 Hercules aircraft used by the U.S. Air Force for tactical airborne electronic warfare and communications jamming operations.
-
C.
Boeing E-7 Wedgetail
The Boeing E-7 Wedgetail is an airborne early warning and control (AEW&C) aircraft equipped with advanced radar and battle management systems to provide surveillance, command, and control capabilities.
-
D.
E-3F Sentry AWACS
The E-3F Sentry AWACS is an airborne early warning and control aircraft equipped with a distinctive rotating radar dome, used for long-range airspace surveillance, command, and battle management.
-
E.
A-50 AWACS
The A-50 AWACS is a Soviet/Russian airborne early warning and control aircraft based on the Il-76 airframe, equipped with a large radar dome to detect and track aerial targets and coordinate air operations.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Boeing C-135 variant
ⓘ
U.S. military aircraft ⓘ reconnaissance aircraft ⓘ |
| aircraftCategory | special-mission aircraft ⓘ |
| airframeOrigin | Boeing KC-135 Stratotanker ⓘ |
| allianceRole | supports U.S. and allied nuclear monitoring ⓘ |
| basedOn |
Boeing C-135 Stratolifter
ⓘ
linked to:
C-135 Stratolifter
|
| capability |
detect airborne radioactive debris
ⓘ
determine presence of nuclear detonations ⓘ track dispersion of radioactive clouds ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| crewComplement | about 30 ⓘ |
| crewType |
flight crew
ⓘ
maintenance personnel ⓘ mission crew ⓘ technical specialists ⓘ |
| designedFor |
analysis of atmospheric samples
ⓘ
collection of atmospheric samples ⓘ detection of nuclear tests ⓘ |
| engineType | turbofan ⓘ |
| enteredServicePeriod | Cold War era ⓘ |
| equipment |
airborne atmospheric collection systems
ⓘ
gaseous samplers ⓘ onboard laboratories ⓘ particulate samplers ⓘ radiation detection instruments ⓘ |
| garrison | Offutt Air Force Base ⓘ |
| manufacturer | Boeing ⓘ |
| missionType |
environmental sampling
ⓘ
nuclear treaty monitoring ⓘ radiological event monitoring ⓘ |
| nickname | Constant Phoenix ⓘ |
| notableUse |
monitoring foreign nuclear tests
ⓘ
monitoring suspected nuclear accidents ⓘ |
| numberOfEngines | 4 ⓘ |
| operator | United States Air Force ⓘ |
| originProgram | US atmospheric sampling program ⓘ |
| primaryRole |
atmospheric sampling
ⓘ
nuclear explosion detection ⓘ |
| propulsion | jet ⓘ |
| serviceBranch | Air Combat Command ⓘ |
| status | in service ⓘ |
| tailCodePrefix |
USAF C-135 family
ⓘ
linked to:
C-135 Stratolifter
|
| usedBy | Defense Threat Reduction Agency ⓘ |
| usedFor |
support to intelligence community
ⓘ
support to national command authorities ⓘ verification of nuclear test ban treaties ⓘ |
| user | 55th Wing ⓘ |
| wingConfiguration | fixed-wing ⓘ |
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: WC-135 Description of subject: The WC-135 is a specialized U.S. Air Force reconnaissance aircraft, nicknamed the "Constant Phoenix," designed to collect and analyze atmospheric samples for detecting nuclear explosions.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: WC-135
linked to: WC-135