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: Maria Mstislavna | Statement: [Mstislav I of Kiev, child, Maria Mstislavna]

Target entity: Maria Mstislavna
Context triple: [Mstislav I of Kiev, child, Maria Mstislavna]

• A. Elisaveta Yaroslavna
  Elisaveta Yaroslavna, also known as Elisiv of Kiev, was a Kievan Rus' princess who became Queen consort of Norway through her marriage to King Harald Hardrada in the 11th century.
• B. Rostislava Mstislavna of Smolensk
  Rostislava Mstislavna of Smolensk was a 13th-century Rus' princess from the Smolensk princely house who became Grand Princess consort of Vladimir through her marriage to Grand Prince Yaroslav II.
• C. Marina Vladimirovna of Kiev
  Marina Vladimirovna of Kiev was a medieval Rus' noblewoman, traditionally identified as a daughter of Prince Vladimir II Monomakh and linked through her mother Gytha of Wessex to the royal House of Wessex in England.
• D. Theodosia Igorevna of Ryazan
  Theodosia Igorevna of Ryazan was a 13th-century Rus' noblewoman and princess of Ryazan, best known as the mother of the famed prince and military leader Alexander Nevsky.
• E. Eudoxia of Moscow
  Eudoxia of Moscow was a 14th-century Russian noblewoman and Grand Princess of Moscow, known as the pious wife of Grand Prince Dmitry Donskoy and mother of his heirs.
• 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: Maria Mstislavna
Triple: [Mstislav I of Kiev, child, Maria Mstislavna]

Maria Mstislavna was a Kievan Rus' princess of the 12th century, known primarily as a daughter of Grand Prince Mstislav I of Kiev and a member of the Rurikid dynasty.

Target entity: Maria Mstislavna
Target entity description: Maria Mstislavna was a Kievan Rus' princess of the 12th century, known primarily as a daughter of Grand Prince Mstislav I of Kiev and a member of the Rurikid dynasty.

• A. Elisaveta Yaroslavna
  Elisaveta Yaroslavna, also known as Elisiv of Kiev, was a Kievan Rus' princess who became Queen consort of Norway through her marriage to King Harald Hardrada in the 11th century.
• B. Rostislava Mstislavna of Smolensk
  Rostislava Mstislavna of Smolensk was a 13th-century Rus' princess from the Smolensk princely house who became Grand Princess consort of Vladimir through her marriage to Grand Prince Yaroslav II.
• C. Marina Vladimirovna of Kiev
  Marina Vladimirovna of Kiev was a medieval Rus' noblewoman, traditionally identified as a daughter of Prince Vladimir II Monomakh and linked through her mother Gytha of Wessex to the royal House of Wessex in England.
• D. Theodosia Igorevna of Ryazan
  Theodosia Igorevna of Ryazan was a 13th-century Rus' noblewoman and princess of Ryazan, best known as the mother of the famed prince and military leader Alexander Nevsky.
• E. Eudoxia of Moscow
  Eudoxia of Moscow was a 14th-century Russian noblewoman and Grand Princess of Moscow, known as the pious wife of Grand Prince Dmitry Donskoy and mother of his heirs.
• F. None of above. chosen