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: Rastislav | Statement: [Great Moravia, ruler, Rastislav]

Target entity: Rastislav
Context triple: [Great Moravia, ruler, Rastislav]

• A. Michael Shishman
  Michael Shishman was a 14th-century tsar of Bulgaria known for his ambitious but ultimately unsuccessful military campaigns to restore the strength and territory of the Second Bulgarian Empire.
• B. Mojmir I
  Mojmir I was the 9th-century founding prince of Great Moravia, credited with unifying Slavic tribes in the region and establishing one of the earliest Slavic states in Central Europe.
• C. King Stefan the First-Crowned
  King Stefan the First-Crowned was the first king of Serbia from the Nemanjić dynasty, known for consolidating the medieval Serbian state and fostering its religious and cultural institutions.
• D. King Stefan Uroš III Dečanski
  King Stefan Uroš III Dečanski was a 14th-century Serbian king of the Nemanjić dynasty, noted for consolidating the medieval Serbian state and for his pious patronage of Orthodox Christian culture.
• E. King Stefan Uroš I of Serbia
  King Stefan Uroš I of Serbia was a 13th-century Serbian monarch of the Nemanjić dynasty known for consolidating royal authority and fostering cultural and religious development in medieval Serbia.
• 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: Rastislav
Triple: [Great Moravia, ruler, Rastislav]

Rastislav was a 9th-century prince of Great Moravia known for consolidating its independence from the Franks and inviting Byzantine missionaries Cyril and Methodius, which helped spread Christianity and Slavic literacy.

Target entity: Rastislav
Target entity description: Rastislav was a 9th-century prince of Great Moravia known for consolidating its independence from the Franks and inviting Byzantine missionaries Cyril and Methodius, which helped spread Christianity and Slavic literacy.

• A. Michael Shishman
  Michael Shishman was a 14th-century tsar of Bulgaria known for his ambitious but ultimately unsuccessful military campaigns to restore the strength and territory of the Second Bulgarian Empire.
• B. Mojmir I
  Mojmir I was the 9th-century founding prince of Great Moravia, credited with unifying Slavic tribes in the region and establishing one of the earliest Slavic states in Central Europe.
• C. King Stefan the First-Crowned
  King Stefan the First-Crowned was the first king of Serbia from the Nemanjić dynasty, known for consolidating the medieval Serbian state and fostering its religious and cultural institutions.
• D. King Stefan Uroš III Dečanski
  King Stefan Uroš III Dečanski was a 14th-century Serbian king of the Nemanjić dynasty, noted for consolidating the medieval Serbian state and for his pious patronage of Orthodox Christian culture.
• E. King Stefan Uroš I of Serbia
  King Stefan Uroš I of Serbia was a 13th-century Serbian monarch of the Nemanjić dynasty known for consolidating royal authority and fostering cultural and religious development in medieval Serbia.
• F. None of above. chosen