Topic orientation
921 at a glance
The strongest research directions include Births and Deaths. Use the connected concepts below as starting points, not as a keyword checklist.
Research this topic
Explore the main themes, entities and connections around 921. Start with the topic map, then use the sections below for research and deeper semantic analysis.
Explore this topic
Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.
Births
Deaths
Overview
Key facts & relationships
High-confidence facts extracted from structured source data. Use them as anchors for further research.
- - Kali Yuga
- 4021–4022
- - Shaka Samvat
- 842–843
- - Vikram Samvat
- 977–978
- Ab urbe condita
- 1674
- Armenian calendar
- 370 ԹՎ ՅՀ
- Assyrian calendar
- 5671
Topics to explore
A structured outline of related entities, concepts and subtopics. Open any item to build a new map centered on it.Browse the full topic structure. Each item opens a new analysis centered on that subject.
Overview
- CMXXI Roman numerals
- Common year starting on Monday
- Julian calendar
- March
- Battle of Pegae
- Kavhan
- Theodore Sigritsa
- Constantinople
- Golden Horn
- Henry I Henry the Fowler
- Arnulf I Arnulf, Duke of Bavaria
- Bavaria Duchy of Bavaria
- Regensburg
- East Frankish Kingdom East Francia
- Germany
- Landulf I Landulf I of Benevento
- Benevento Duchy of Benevento
- Apulian Apulia
- Ascoli Ascoli Satriano
- Nobility
- Byzantine Empire
- Stratego Strategos
- Theme of Longobardia Longobardia
- September 15
- Ludmila Ludmila of Bohemia
- Bořivoj I Bořivoj I, Duke of Bohemia
- Drahomíra
- Tetín Tetín (Beroun District)
- Czech Republic
- Canonised Canonization
Births
- February 21
- Abe no Seimei
- Astrologer Astrology
- 1005
- October 9
- Li Chun'an
- Merchant
- 999 AD 999
- October 27
- Chai Rong
- Later Zhou
- 959
- Edmund I
- England Kingdom of England
- 946
- Ja'far ibn al-Furat
- Vizier
- 1001
- Louis IV Louis IV of France
- West Frankish Kingdom West Francia
- 920
- Ōnakatomi no Yoshinobu
- 991
Deaths
- February 13
- Vratislaus I Vratislaus I, Duke of Bohemia
- Bohemia Duchy of Bohemia
- Alexios Mosele Alexios Mosele (admiral)
- Elvira Menéndez Elvira Menéndez (died 921)
- Galicia Kingdom of Galicia
- León Kingdom of León
- Harusindan
- Gilites Gilaks
- Iran Northern Iran
- Lili ibn al-Nu'man
- Liu Xun Liu Xun (Later Liang)
- 858
- Ragnall ua Ímair
- Northumbria Kingdom of Northumbria
- Richard Richard, Duke of Burgundy
- Burgundy Duchy of Burgundy
- Wang Rong Wang Rong (warlord)
- Warlord
- 877
Advanced semantic analysis
Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.
How this topic connects Entity context
Quick relationship hints grouped by predicate. Useful for spotting recurring semantic connections around the current entity.See the strongest relationship patterns around the current topic before diving into the raw triples.
921
Top relations
Important terminology Word statistics
Frequent words and multi-word phrases across the lead, headings, infobox and body. Useful for terminology coverage.Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.
Important terminology
byzantine king battle frankish ludmila cmxxi empire chinese japanese 21 julian calendar forces henry duke caliphate ibn fatimid later 991
Entity relationships Subject–Predicate–Object triples
Extracted RDF-like relationships with confidence and source. The table includes structured facts and lower-confidence contextual relations.| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| 921 | - Kali Yuga | 4021–4022 | 1.00 | infobox |
| 921 | - Shaka Samvat | 842–843 | 1.00 | infobox |
| 921 | - Vikram Samvat | 977–978 | 1.00 | infobox |
| 921 | Ab urbe condita | 1674 | 1.00 | infobox |
| 921 | Armenian calendar | 370 ԹՎ ՅՀ | 1.00 | infobox |
| 921 | Assyrian calendar | 5671 | 1.00 | infobox |
| 921 | Balinese saka calendar | 842–843 | 1.00 | infobox |
| 921 | Bengali calendar | 327–328 | 1.00 | infobox |
| 921 | Berber calendar | 1871 | 1.00 | infobox |
| 921 | Buddhist calendar | 1465 | 1.00 | infobox |
| 921 | Burmese calendar | 283 | 1.00 | infobox |
| 921 | Byzantine calendar | 6429–6430 | 1.00 | infobox |
| 921 | Chinese calendar | 庚辰年 (Metal Dragon) 3618 or 3411 — to — 辛巳年 (Metal Snake) 3619 or 3412 | 1.00 | infobox |
| 921 | Coptic calendar | 637–638 | 1.00 | infobox |
| 921 | Discordian calendar | 2087 | 1.00 | infobox |
| 921 | Ethiopian calendar | 913–914 | 1.00 | infobox |
| 921 | Gregorian calendar | 921 CMXXI | 1.00 | infobox |
| 921 | Hebrew calendar | 4681–4682 | 1.00 | infobox |
| 921 | Holocene calendar | 10921 | 1.00 | infobox |
| 921 | Iranian calendar | 299–300 | 1.00 | infobox |
| 921 | Islamic calendar | 308–309 | 1.00 | infobox |
| 921 | Japanese calendar | Engi 21 (延喜２１年) | 1.00 | infobox |
| 921 | Javanese calendar | 820–821 | 1.00 | infobox |
| 921 | Julian calendar | 921 CMXXI | 1.00 | infobox |
| 921 | Korean calendar | 3254 | 1.00 | infobox |
| 921 | Minguo calendar | 991 before ROC 民前991年 | 1.00 | infobox |
| 921 | Nanakshahi calendar | −547 | 1.00 | infobox |
| 921 | Seleucid era | 1232/1233 AG | 1.00 | infobox |
| 921 | Thai solar calendar | 1463–1464 | 1.00 | infobox |
| 921 | Tibetan calendar | ལྕགས་ཕོ་འབྲུག་ལོ་ (male Iron-Dragon) 1047 or 666 or −106 — to — ལྕགས་མོ་སྦྲུལ་ལོ་ (female Iron-Snake) 1048 or 667 or −105 | 1.00 | infobox |
Related concept clusters Concept neighborhoods
Clusters of nearby vocabulary surrounding the topic. Scan them for adjacent concepts and language you may have missed.These clusters group vocabulary that occurs around closely connected concepts in the source material.
Connections between topic areas Semantic bridges
Bridge nodes connect otherwise separate parts of the map. Expand a row to inspect the topic groups on each side.Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.