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: Seniorate Province system of Poland | Statement: [Duke of Sandomierz, partOf, Seniorate Province system of Poland]

Target entity: Seniorate Province system of Poland
Context triple: [Duke of Sandomierz, partOf, Seniorate Province system of Poland]

• A. Seniorate provinces of medieval Poland chosen
  The Seniorate provinces of medieval Poland were a group of principal territorial divisions established to be governed by the senior duke under the 12th-century fragmentation of the Polish realm.
• B. Poland (seniorate system)
  Poland (seniorate system) was a medieval political arrangement in the Kingdom of Poland in which seniority among Piast dukes determined succession and control over a central “senior” province, aiming to preserve unity while dividing territories among rulers.
• C. Silesian estates
  The Silesian estates were the regional noble and clerical representative bodies of the historical region of Silesia, which participated in local governance and negotiated political and fiscal matters with the ruling monarch.
• D. Seniorate Province of Kraków
  The Seniorate Province of Kraków was a principal territorial division and political center of medieval Poland, traditionally reserved for the senior duke as the core of royal authority.
• E. Partitions of Poland
  The Partitions of Poland were a series of three territorial divisions in the late 18th century by Russia, Prussia, and Austria that erased the Polish–Lithuanian Commonwealth from the map of Europe.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.