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: Kings of Mercia | Statement: [Offa of Mercia, category, Kings of Mercia]

Target entity: Kings of Mercia
Context triple: [Offa of Mercia, category, Kings of Mercia]

• A. Mercian dynasty
  The Mercian dynasty was the ruling royal house of the Anglo-Saxon kingdom of Mercia, which dominated much of central England during the 7th to 9th centuries.
• B. Penda of Mercia
  Penda of Mercia was a powerful 7th-century Anglo-Saxon king known for expanding Mercian dominance in central England and for remaining a staunch pagan during the Christianization of the Anglo-Saxon kingdoms.
• C. Offa of Mercia
  Offa of Mercia was an 8th-century Anglo-Saxon king who expanded Mercian dominance across much of England and is best known for commissioning the massive earthwork known as Offa’s Dyke.
• D. Mercia
  Mercia was one of the major Anglo-Saxon kingdoms of early medieval England, centered in the English Midlands and prominent from the 7th to 9th centuries.
• E. Ine of Wessex
  Ine of Wessex was an early 8th-century Anglo-Saxon king noted for consolidating the kingdom of Wessex and issuing one of the earliest surviving English law codes.
• 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: Kings of Mercia
Triple: [Offa of Mercia, category, Kings of Mercia]

Kings of Mercia were the monarchs who ruled the Anglo-Saxon kingdom of Mercia, a dominant power in central England during the early Middle Ages.

Target entity: Kings of Mercia
Target entity description: Kings of Mercia were the monarchs who ruled the Anglo-Saxon kingdom of Mercia, a dominant power in central England during the early Middle Ages.

• A. Mercian dynasty chosen
  The Mercian dynasty was the ruling royal house of the Anglo-Saxon kingdom of Mercia, which dominated much of central England during the 7th to 9th centuries.
• B. Penda of Mercia
  Penda of Mercia was a powerful 7th-century Anglo-Saxon king known for expanding Mercian dominance in central England and for remaining a staunch pagan during the Christianization of the Anglo-Saxon kingdoms.
• C. Offa of Mercia
  Offa of Mercia was an 8th-century Anglo-Saxon king who expanded Mercian dominance across much of England and is best known for commissioning the massive earthwork known as Offa’s Dyke.
• D. Mercia
  Mercia was one of the major Anglo-Saxon kingdoms of early medieval England, centered in the English Midlands and prominent from the 7th to 9th centuries.
• E. Ine of Wessex
  Ine of Wessex was an early 8th-century Anglo-Saxon king noted for consolidating the kingdom of Wessex and issuing one of the earliest surviving English law codes.
• F. None of above.