Space Delta 4
E101960
Space Delta 4 is a unit of the U.S. Space Force responsible for providing strategic and tactical missile warning and related space-based surveillance capabilities.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Space Delta 4 canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T823433 — 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: Space Delta 4 Context triple: [Space Operations Command, hasComponent, Space Delta 4]
-
A.
Space Delta 2
Space Delta 2 is a unit of the United States Space Force responsible for space domain awareness and tracking objects in Earth’s orbit.
-
B.
Space Delta 3
Space Delta 3 is a unit of the United States Space Force responsible for space electromagnetic warfare operations and capabilities.
-
C.
Atlas V 541
Atlas V 541 is a heavy-lift configuration of the Atlas V expendable launch system used by NASA to send large interplanetary spacecraft, such as the Curiosity Mars rover, into space.
-
D.
LC-39B
LC-39B is a launch pad at NASA’s Kennedy Space Center that has supported major crewed and uncrewed space missions, including Space Shuttle flights and later Space Launch System operations.
-
E.
United Launch Alliance
United Launch Alliance is an American aerospace company that provides launch services for government and commercial customers, operating rockets such as Atlas V, Delta IV, and Vulcan.
- 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: Space Delta 4 Target entity description: Space Delta 4 is a unit of the U.S. Space Force responsible for providing strategic and tactical missile warning and related space-based surveillance capabilities.
-
A.
Space Delta 2
Space Delta 2 is a unit of the United States Space Force responsible for space domain awareness and tracking objects in Earth’s orbit.
-
B.
Space Delta 3
Space Delta 3 is a unit of the United States Space Force responsible for space electromagnetic warfare operations and capabilities.
-
C.
Atlas V 541
Atlas V 541 is a heavy-lift configuration of the Atlas V expendable launch system used by NASA to send large interplanetary spacecraft, such as the Curiosity Mars rover, into space.
-
D.
LC-39B
LC-39B is a launch pad at NASA’s Kennedy Space Center that has supported major crewed and uncrewed space missions, including Space Shuttle flights and later Space Launch System operations.
-
E.
United Launch Alliance
United Launch Alliance is an American aerospace company that provides launch services for government and commercial customers, operating rockets such as Atlas V, Delta IV, and Vulcan.
- F. None of above. chosen
Statements (34)
| Predicate | Object |
|---|---|
| instanceOf |
United States Space Force delta
ⓘ
military unit ⓘ |
| allegiance | United States of America ⓘ |
| commandStructure | Space Operations Command deltas ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| domain | space ⓘ |
| establishedBy | United States Space Force reorganization of legacy Air Force Space Command units ⓘ |
| focusesOn |
missile impact prediction
ⓘ
missile launch detection ⓘ missile trajectory tracking ⓘ |
| function | space-based missile warning and surveillance ⓘ |
| garrison | Buckley Space Force Base ⓘ |
| garrisonLocation | Aurora, Colorado ⓘ |
| mission |
operate and support space-based missile warning systems
ⓘ
provide strategic and tactical missile warning to U.S. and allied forces ⓘ |
| nickname | DEL 4 ⓘ |
| operates |
ground-based missile warning command and control systems
ⓘ
space-based infrared missile warning systems ⓘ |
| partOf | Space Operations Command ⓘ |
| provides |
missile warning data to allied partners
ⓘ
missile warning data to national leadership ⓘ missile warning data to theater commanders ⓘ |
| responsibleFor |
missile warning for North America
ⓘ
missile warning for combatant commanders worldwide ⓘ |
| role |
missile warning operations
ⓘ
space-based surveillance ⓘ strategic missile warning ⓘ tactical missile warning ⓘ |
| serviceBranch | United States Space Force ⓘ |
| supports |
North American Aerospace Defense Command
ⓘ
U.S. Space Command ⓘ
surface form:
United States Space Command
U.S. Strategic Command ⓘ
surface form:
United States Strategic Command
geographic combatant commanders ⓘ |
| type | space operations unit ⓘ |
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: Space Delta 4 Description of subject: Space Delta 4 is a unit of the U.S. Space Force responsible for providing strategic and tactical missile warning and related space-based surveillance capabilities.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.