Triple

Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).

Phrase: Bulgarian forces under Khan Krum | Statement: [Siege of Adrianople (813), combatant, Bulgarian forces under Khan Krum]

Target entity: Bulgarian forces under Khan Krum
Context triple: [Siege of Adrianople (813), combatant, Bulgarian forces under Khan Krum]

• A. siege of Constantinople by Krum
  The siege of Constantinople by Krum was a major early 9th-century Bulgarian attempt to capture the Byzantine capital, highlighting the height of Bulgarian military power and posing a serious threat to the Byzantine Empire.
• B. Kievan Rus' invasion of Bulgaria
  The Kievan Rus' invasion of Bulgaria was a 10th-century military campaign in which Prince Sviatoslav I of Kiev overran much of the First Bulgarian Empire, reshaping the balance of power in Eastern Europe and prompting Byzantine intervention.
• C. forces of Ögedei Khan
  The forces of Ögedei Khan were the Mongol imperial armies commanded under the third son of Genghis Khan, which expanded and consolidated Mongol rule across much of Eurasia in the early 13th century.
• D. Qara Khitai forces
  Qara Khitai forces were the military troops of the Qara Khitai (Western Liao) empire, a Central Asian successor state to the Liao dynasty that opposed the expanding Mongol Empire in the early 13th century.
• E. Kievan Rus military forces
  Kievan Rus military forces were the medieval armed forces of the East Slavic state of Kievan Rus, composed mainly of princely retinues and levied warriors who conducted campaigns and defended its territories from the 9th to the 13th centuries.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"

Entity: Bulgarian forces under Khan Krum
Triple: [Siege of Adrianople (813), combatant, Bulgarian forces under Khan Krum]

Bulgarian forces under Khan Krum were the early 9th-century army of the First Bulgarian Empire that, under the leadership of Khan Krum, achieved major victories against the Byzantine Empire and expanded Bulgarian territory in the Balkans.

Target entity: Bulgarian forces under Khan Krum
Target entity description: Bulgarian forces under Khan Krum were the early 9th-century army of the First Bulgarian Empire that, under the leadership of Khan Krum, achieved major victories against the Byzantine Empire and expanded Bulgarian territory in the Balkans.

• A. siege of Constantinople by Krum
  The siege of Constantinople by Krum was a major early 9th-century Bulgarian attempt to capture the Byzantine capital, highlighting the height of Bulgarian military power and posing a serious threat to the Byzantine Empire.
• B. Kievan Rus' invasion of Bulgaria
  The Kievan Rus' invasion of Bulgaria was a 10th-century military campaign in which Prince Sviatoslav I of Kiev overran much of the First Bulgarian Empire, reshaping the balance of power in Eastern Europe and prompting Byzantine intervention.
• C. forces of Ögedei Khan
  The forces of Ögedei Khan were the Mongol imperial armies commanded under the third son of Genghis Khan, which expanded and consolidated Mongol rule across much of Eurasia in the early 13th century.
• D. Qara Khitai forces
  Qara Khitai forces were the military troops of the Qara Khitai (Western Liao) empire, a Central Asian successor state to the Liao dynasty that opposed the expanding Mongol Empire in the early 13th century.
• E. Kievan Rus military forces
  Kievan Rus military forces were the medieval armed forces of the East Slavic state of Kievan Rus, composed mainly of princely retinues and levied warriors who conducted campaigns and defended its territories from the 9th to the 13th centuries.
• F. None of above. chosen