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: Konstantin of Rostov | Statement: [Yaroslav II of Vladimir, sibling, Konstantin of Rostov]

Target entity: Konstantin of Rostov
Context triple: [Yaroslav II of Vladimir, sibling, Konstantin of Rostov]

• A. Konstantin, Prince of Vidin
  Konstantin, Prince of Vidin, is a Bulgarian royal and member of the former Bulgarian royal family, known as the son of King Simeon II of Bulgaria.
• B. Yuri Dmitrievich of Zvenigorod
  Yuri Dmitrievich of Zvenigorod was a Russian prince of the late 14th and early 15th centuries, known as a son of Grand Prince Dmitry Donskoy and a key figure in the dynastic struggles of the Grand Duchy of Moscow.
• C. Mikhail of Tver
  Mikhail of Tver was a prominent early 14th-century Russian prince and Grand Prince of Vladimir who played a central role in the power struggle between Tver and Moscow and was later canonized as a martyr by the Russian Orthodox Church.
• D. Andrey Ivanovich of Staritsa
  Andrey Ivanovich of Staritsa was a 16th-century Russian prince of the Rurikid dynasty who held the appanage of Staritsa and was involved in the power struggles surrounding the reign of Ivan the Terrible.
• E. Simeon Ivanovich of Kaluga
  Simeon Ivanovich of Kaluga was a Russian princely figure from the ruling dynasty of Muscovy, associated with the appanage principality of Kaluga in the late medieval period.
• 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: Konstantin of Rostov
Triple: [Yaroslav II of Vladimir, sibling, Konstantin of Rostov]

Konstantin of Rostov was a 13th-century Russian prince who ruled Rostov and played a notable role in the complex dynastic politics of the Vladimir-Suzdal principality.

Target entity: Konstantin of Rostov
Target entity description: Konstantin of Rostov was a 13th-century Russian prince who ruled Rostov and played a notable role in the complex dynastic politics of the Vladimir-Suzdal principality.

• A. Konstantin, Prince of Vidin
  Konstantin, Prince of Vidin, is a Bulgarian royal and member of the former Bulgarian royal family, known as the son of King Simeon II of Bulgaria.
• B. Yuri Dmitrievich of Zvenigorod
  Yuri Dmitrievich of Zvenigorod was a Russian prince of the late 14th and early 15th centuries, known as a son of Grand Prince Dmitry Donskoy and a key figure in the dynastic struggles of the Grand Duchy of Moscow.
• C. Mikhail of Tver
  Mikhail of Tver was a prominent early 14th-century Russian prince and Grand Prince of Vladimir who played a central role in the power struggle between Tver and Moscow and was later canonized as a martyr by the Russian Orthodox Church.
• D. Andrey Ivanovich of Staritsa
  Andrey Ivanovich of Staritsa was a 16th-century Russian prince of the Rurikid dynasty who held the appanage of Staritsa and was involved in the power struggles surrounding the reign of Ivan the Terrible.
• E. Simeon Ivanovich of Kaluga
  Simeon Ivanovich of Kaluga was a Russian princely figure from the ruling dynasty of Muscovy, associated with the appanage principality of Kaluga in the late medieval period.
• F. None of above. chosen