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: Helena of Kiev | Statement: [Yuri Dolgorukiy, spouse, Helena of Kiev]

Target entity: Helena of Kiev
Context triple: [Yuri Dolgorukiy, spouse, Helena of Kiev]

• A. Euphemia of Kiev
  Euphemia of Kiev was a Kievan Rus' princess of the Rurikid dynasty who became queen consort of Hungary through her marriage into the Árpád royal house.
• B. Olga of Kiev
  Olga of Kiev was a 10th-century regent of Kievan Rus' renowned for her ruthless vengeance against the Drevlians and later venerated as a saint for being one of the first prominent rulers in the region to convert to Christianity.
• C. Anna of Smolensk
  Anna of Smolensk was a medieval noblewoman and the first wife of Grand Duke Vytautas the Great of Lithuania, linking him to the Rus' princely families.
• D. Eupraxia of Kiev
  Eupraxia of Kiev was a Kievan Rus' princess who became Holy Roman Empress through her marriage to Emperor Henry IV and is known for her prominent role in the political and religious conflicts of his reign.
• E. Elena of Moscow
  Elena of Moscow was a Russian noblewoman of the late 15th and early 16th centuries, known primarily as a daughter of Grand Prince Ivan III of Moscow and a member of the ruling Rurikid dynasty.
• 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: Helena of Kiev
Triple: [Yuri Dolgorukiy, spouse, Helena of Kiev]

Helena of Kiev was a Kievan Rus' noblewoman, traditionally regarded as the wife of Prince Yuri Dolgorukiy, a key figure in the early history of northeastern Rus'.

Target entity: Helena of Kiev
Target entity description: Helena of Kiev was a Kievan Rus' noblewoman, traditionally regarded as the wife of Prince Yuri Dolgorukiy, a key figure in the early history of northeastern Rus'.

• A. Euphemia of Kiev
  Euphemia of Kiev was a Kievan Rus' princess of the Rurikid dynasty who became queen consort of Hungary through her marriage into the Árpád royal house.
• B. Olga of Kiev
  Olga of Kiev was a 10th-century regent of Kievan Rus' renowned for her ruthless vengeance against the Drevlians and later venerated as a saint for being one of the first prominent rulers in the region to convert to Christianity.
• C. Anna of Smolensk
  Anna of Smolensk was a medieval noblewoman and the first wife of Grand Duke Vytautas the Great of Lithuania, linking him to the Rus' princely families.
• D. Eupraxia of Kiev
  Eupraxia of Kiev was a Kievan Rus' princess who became Holy Roman Empress through her marriage to Emperor Henry IV and is known for her prominent role in the political and religious conflicts of his reign.
• E. Elena of Moscow
  Elena of Moscow was a Russian noblewoman of the late 15th and early 16th centuries, known primarily as a daughter of Grand Prince Ivan III of Moscow and a member of the ruling Rurikid dynasty.
• F. None of above. chosen