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: Otter Sandstone Formation | Statement: [Sherwood Sandstone Group, hasSubunits, Otter Sandstone Formation]

Target entity: Otter Sandstone Formation
Context triple: [Sherwood Sandstone Group, hasSubunits, Otter Sandstone Formation]

• A. Bunter Sandstone Formation
  The Bunter Sandstone Formation is a Triassic-age sedimentary rock unit in northwestern Europe, characterized by its red, fine- to medium-grained sandstones deposited in fluvial and aeolian environments.
• B. Wingate Sandstone
  Wingate Sandstone is a prominent Late Triassic sandstone formation of the Colorado Plateau, known for forming towering vertical cliffs and dramatic canyon walls in places like Capitol Reef National Park.
• C. Minchinbury Sandstone
  Minchinbury Sandstone is a geological rock unit within the Sydney Basin of New South Wales, Australia, known for its fine- to medium-grained sedimentary sandstone deposits.
• D. Sherwood Sandstone Group
  The Sherwood Sandstone Group is a major Triassic sandstone rock sequence in the UK, notable as an important aquifer and hydrocarbon reservoir across several sedimentary basins.
• E. Salem Limestone formation
  The Salem Limestone formation is a thick, fossil-rich Mississippian-age limestone unit in the U.S. Midwest, widely quarried as a high-quality building stone used in many prominent American structures.
• 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: Otter Sandstone Formation
Triple: [Sherwood Sandstone Group, hasSubunits, Otter Sandstone Formation]

The Otter Sandstone Formation is a Triassic-age sedimentary rock unit in southwest England, notable for its red sandstones deposited in ancient river and desert environments and its inclusion within the broader Sherwood Sandstone Group.

Target entity: Otter Sandstone Formation
Target entity description: The Otter Sandstone Formation is a Triassic-age sedimentary rock unit in southwest England, notable for its red sandstones deposited in ancient river and desert environments and its inclusion within the broader Sherwood Sandstone Group.

• A. Bunter Sandstone Formation
  The Bunter Sandstone Formation is a Triassic-age sedimentary rock unit in northwestern Europe, characterized by its red, fine- to medium-grained sandstones deposited in fluvial and aeolian environments.
• B. Wingate Sandstone
  Wingate Sandstone is a prominent Late Triassic sandstone formation of the Colorado Plateau, known for forming towering vertical cliffs and dramatic canyon walls in places like Capitol Reef National Park.
• C. Minchinbury Sandstone
  Minchinbury Sandstone is a geological rock unit within the Sydney Basin of New South Wales, Australia, known for its fine- to medium-grained sedimentary sandstone deposits.
• D. Sherwood Sandstone Group chosen
  The Sherwood Sandstone Group is a major Triassic sandstone rock sequence in the UK, notable as an important aquifer and hydrocarbon reservoir across several sedimentary basins.
• E. Salem Limestone formation
  The Salem Limestone formation is a thick, fossil-rich Mississippian-age limestone unit in the U.S. Midwest, widely quarried as a high-quality building stone used in many prominent American structures.
• F. None of above.