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: Constantine Pavlovich of Russia | Statement: [Paul I of Russia, child, Constantine Pavlovich of Russia]

Target entity: Constantine Pavlovich of Russia
Context triple: [Paul I of Russia, child, Constantine Pavlovich of Russia]

• A. Grand Duke Vladimir Alexandrovich of Russia
  Grand Duke Vladimir Alexandrovich of Russia was a prominent 19th-century Russian imperial grand duke, son of Emperor Alexander II, influential military commander, and key figure in the politics and culture of the late Romanov court.
• B. Grand Duke Michael Alexandrovich of Russia
  Grand Duke Michael Alexandrovich of Russia was the youngest brother of Tsar Nicholas II and the last heir to the Russian throne before the monarchy’s collapse during the 1917 Revolution.
• C. Grand Duke Sergei Alexandrovich of Russia
  Grand Duke Sergei Alexandrovich of Russia was a prominent late-19th-century Romanov grand duke, Moscow’s governor-general, and influential conservative figure whose assassination in 1905 marked a key moment in the turmoil preceding the Russian Revolution.
• D. Grand Duke George Alexandrovich of Russia
  Grand Duke George Alexandrovich of Russia was a younger son of Emperor Alexander III and the younger brother of the last Russian tsar, Nicholas II, whose promising naval and military career was cut short by ill health and an early death.
• E. Peter II of Russia
  Peter II of Russia was an early 18th-century emperor of Russia from the Romanov dynasty whose brief reign followed that of his grandfather Peter the Great.
• 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: Constantine Pavlovich of Russia
Triple: [Paul I of Russia, child, Constantine Pavlovich of Russia]

Constantine Pavlovich of Russia was a Russian grand duke and de facto viceroy of the Kingdom of Poland, best known for his role in the succession crisis following the death of his brother Alexander I.

Target entity: Constantine Pavlovich of Russia
Target entity description: Constantine Pavlovich of Russia was a Russian grand duke and de facto viceroy of the Kingdom of Poland, best known for his role in the succession crisis following the death of his brother Alexander I.

• A. Grand Duke Vladimir Alexandrovich of Russia
  Grand Duke Vladimir Alexandrovich of Russia was a prominent 19th-century Russian imperial grand duke, son of Emperor Alexander II, influential military commander, and key figure in the politics and culture of the late Romanov court.
• B. Grand Duke Michael Alexandrovich of Russia
  Grand Duke Michael Alexandrovich of Russia was the youngest brother of Tsar Nicholas II and the last heir to the Russian throne before the monarchy’s collapse during the 1917 Revolution.
• C. Grand Duke Sergei Alexandrovich of Russia
  Grand Duke Sergei Alexandrovich of Russia was a prominent late-19th-century Romanov grand duke, Moscow’s governor-general, and influential conservative figure whose assassination in 1905 marked a key moment in the turmoil preceding the Russian Revolution.
• D. Grand Duke George Alexandrovich of Russia
  Grand Duke George Alexandrovich of Russia was a younger son of Emperor Alexander III and the younger brother of the last Russian tsar, Nicholas II, whose promising naval and military career was cut short by ill health and an early death.
• E. Peter II of Russia
  Peter II of Russia was an early 18th-century emperor of Russia from the Romanov dynasty whose brief reign followed that of his grandfather Peter the Great.
• F. None of above. chosen