PDF/A
E618944
PDF/A is an ISO-standardized version of the PDF format designed specifically for long-term archiving and reliable reproduction of electronic documents.
All labels observed (10)
How this entity was disambiguated
This entity first appeared as the object of triple T6790275 — 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: PDF/A Context triple: [Ghostscript, supportsFormat, PDF/A]
-
A.
PDF/X
PDF/X is a family of ISO-standardized PDF formats designed specifically to ensure reliable, predictable exchange of print-ready graphic content in professional publishing workflows.
-
B.
PDF/UA
PDF/UA is an ISO-standardized version of the PDF format specifically designed to ensure documents are accessible to users with disabilities and compatible with assistive technologies.
-
C.
Pades
Pades is a village in northwestern Greece located in the mountainous region near Mount Smolikas.
-
D.
PostScript
PostScript is a page description and programming language widely used in desktop publishing and printing to precisely define the layout and appearance of text and graphics.
-
E.
Portable Document Format
Portable Document Format (PDF) is a widely used file format designed for reliably presenting and exchanging documents independent of software, hardware, or operating systems.
- 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: PDF/A Target entity description: PDF/A is an ISO-standardized version of the PDF format designed specifically for long-term archiving and reliable reproduction of electronic documents.
-
A.
PDF/X
PDF/X is a family of ISO-standardized PDF formats designed specifically to ensure reliable, predictable exchange of print-ready graphic content in professional publishing workflows.
-
B.
PDF/UA
PDF/UA is an ISO-standardized version of the PDF format specifically designed to ensure documents are accessible to users with disabilities and compatible with assistive technologies.
-
C.
Pades
Pades is a village in northwestern Greece located in the mountainous region near Mount Smolikas.
-
D.
PostScript
PostScript is a page description and programming language widely used in desktop publishing and printing to precisely define the layout and appearance of text and graphics.
-
E.
Portable Document Format
Portable Document Format (PDF) is a widely used file format designed for reliably presenting and exchanging documents independent of software, hardware, or operating systems.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
ISO standard
ⓘ
PDF/A conformance level ⓘ PDF/A standard part ⓘ archival document format ⓘ file format ⓘ |
| allows | embedding of arbitrary file formats ⓘ |
| basedOn |
PDF
ⓘ
linked to:
Portable Document Format
PDF 1.4 ⓘ PDF 1.7 ⓘ
linked to:
ISO 32000
|
| definedInStandard |
ISO 19005-1
ⓘ
linked to:
ISO 19005
ISO 19005-2 ⓘ
linked to:
ISO 19005
ISO 19005-3 ⓘ
linked to:
ISO 19005
|
| designedFor |
hardware-independent rendering
ⓘ
software-independent rendering ⓘ |
| ensures |
logical structure preservation
ⓘ
long-term reproducibility of documents ⓘ tagged PDF for accessibility ⓘ visual appearance preservation ⓘ |
| focusesOn |
device-independent rendering
ⓘ
self-contained documents ⓘ |
| fullName | PDF for Archiving ⓘ |
| hasConformanceLevel |
PDF/A-1a
ⓘ
linked to:
PDF/A
PDF/A-1b ⓘ
linked to:
PDF/A
PDF/A-2a ⓘ PDF/A-2b ⓘ PDF/A-2u ⓘ PDF/A-3a ⓘ
linked to:
PDF/A
PDF/A-3b ⓘ
linked to:
PDF/A
PDF/A-3u ⓘ |
| hasPart |
PDF/A-1
ⓘ
PDF/A-2 ⓘ
linked to:
PDF/A
PDF/A-3 ⓘ
linked to:
PDF/A
|
| hasPrimaryPurpose |
long-term archiving of electronic documents
ⓘ
reliable reproduction of electronic documents ⓘ |
| prohibits |
audio and video content
ⓘ
encryption ⓘ external content references ⓘ |
| publishedBy | ISO ⓘ |
| requires |
device-independent color specification
ⓘ
embedding of all fonts ⓘ metadata for document description ⓘ self-containment of all resources ⓘ |
| standardizedBy | International Organization for Standardization ⓘ |
| supports |
JPEG2000 compression
ⓘ
embedding of PDF/A files ⓘ layers ⓘ transparency ⓘ |
| usedIn |
digital preservation
ⓘ
electronic records management ⓘ government document archiving ⓘ legal document archiving ⓘ library and institutional repositories ⓘ |
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: PDF/A Description of subject: PDF/A is an ISO-standardized version of the PDF format designed specifically for long-term archiving and reliable reproduction of electronic documents.
Referenced by (17)
Full triples — surface form annotated when it differs from this entity's canonical label.
ISO 19005
→
hasTitle
→
Document management — Electronic document file format for long-term preservation — PDF/A
ⓘ
linked to: PDF/A
ISO 19005-1
→
hasTitle
→
Document management — Electronic document file format for long-term preservation — Part 1: Use of PDF 1.4 (PDF/A-1)
ⓘ
subject linked to:
ISO 19005
linked to: PDF/A
ISO 19005-2
→
hasTitle
→
Document management — Electronic document file format for long-term preservation — Part 2: Use of ISO 32000-1 (PDF/A-2)
ⓘ
subject linked to:
ISO 19005
linked to: PDF/A