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: Blue John stone | Statement: [Castleton, knownFor, Blue John stone]

Target entity: Blue John stone
Context triple: [Castleton, knownFor, Blue John stone]

• A. Kentish ragstone
  Kentish ragstone is a hard, grey limestone from Kent, England, historically quarried for major building works including many medieval fortifications and churches.
• B. Alabaster
  Alabaster is a suburban city in central Alabama, known as part of the Birmingham metropolitan area and one of the state's larger, rapidly growing communities.
• C. Tuckahoe marble
  Tuckahoe marble is a high-quality white to gray dolomitic marble historically quarried in Westchester County, New York, widely used in prominent 19th-century American buildings and monuments.
• D. Fairfax Stone
  Fairfax Stone is a historic boundary marker in West Virginia that denotes the traditional source of the North Branch of the Potomac River and once defined colonial land grants.
• E. Collyhurst sandstone
  Collyhurst sandstone is a distinctive red Triassic sandstone historically quarried in Manchester, England, and widely used in local building and architectural stonework.
• 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: Blue John stone
Triple: [Castleton, knownFor, Blue John stone]

Blue John stone is a rare, banded variety of fluorite prized as a decorative gemstone, found almost exclusively in the caves near Castleton in Derbyshire, England.

Target entity: Blue John stone
Target entity description: Blue John stone is a rare, banded variety of fluorite prized as a decorative gemstone, found almost exclusively in the caves near Castleton in Derbyshire, England.

• A. Kentish ragstone
  Kentish ragstone is a hard, grey limestone from Kent, England, historically quarried for major building works including many medieval fortifications and churches.
• B. Alabaster
  Alabaster is a suburban city in central Alabama, known as part of the Birmingham metropolitan area and one of the state's larger, rapidly growing communities.
• C. Tuckahoe marble
  Tuckahoe marble is a high-quality white to gray dolomitic marble historically quarried in Westchester County, New York, widely used in prominent 19th-century American buildings and monuments.
• D. Fairfax Stone
  Fairfax Stone is a historic boundary marker in West Virginia that denotes the traditional source of the North Branch of the Potomac River and once defined colonial land grants.
• E. Collyhurst sandstone
  Collyhurst sandstone is a distinctive red Triassic sandstone historically quarried in Manchester, England, and widely used in local building and architectural stonework.
• F. None of above. chosen