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: The Cave of Skulls | Statement: [An Unearthly Child, precedes, The Cave of Skulls]

Target entity: The Cave of Skulls
Context triple: [An Unearthly Child, precedes, The Cave of Skulls]

• A. Sótano de las Golondrinas
  Sótano de las Golondrinas is a massive open-air pit cave in Mexico famed for its dramatic vertical drop and spectacular flocks of birds that spiral in and out of its depths.
• B. El Puente de Metlac
  El Puente de Metlac is a celebrated 19th-century landscape painting by Mexican artist José María Velasco that depicts a dramatic railway bridge set within the lush, mountainous terrain of Veracruz.
• C. The Valley of Bones
  The Valley of Bones is a novel in Anthony Powell’s multi-volume sequence "A Dance to the Music of Time," focusing on British army life during World War II.
• D. The Halls of Montezuma
  The Halls of Montezuma is a 1951 American war film that follows a group of U.S. Marines during World War II as they endure brutal combat and psychological strain in the Pacific theater.
• E. Caja de Muertos
  Caja de Muertos is a small, uninhabited island and nature reserve off the southern coast of Puerto Rico, known for its beaches, lighthouse, and protected wildlife.
• 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: The Cave of Skulls
Triple: [An Unearthly Child, precedes, The Cave of Skulls]

The Cave of Skulls is the second episode of the first Doctor Who serial, continuing the debut adventure of the First Doctor, Susan, Ian, and Barbara in prehistoric times.

Target entity: The Cave of Skulls
Target entity description: The Cave of Skulls is the second episode of the first Doctor Who serial, continuing the debut adventure of the First Doctor, Susan, Ian, and Barbara in prehistoric times.

• A. Sótano de las Golondrinas
  Sótano de las Golondrinas is a massive open-air pit cave in Mexico famed for its dramatic vertical drop and spectacular flocks of birds that spiral in and out of its depths.
• B. El Puente de Metlac
  El Puente de Metlac is a celebrated 19th-century landscape painting by Mexican artist José María Velasco that depicts a dramatic railway bridge set within the lush, mountainous terrain of Veracruz.
• C. The Valley of Bones
  The Valley of Bones is a novel in Anthony Powell’s multi-volume sequence "A Dance to the Music of Time," focusing on British army life during World War II.
• D. The Halls of Montezuma
  The Halls of Montezuma is a 1951 American war film that follows a group of U.S. Marines during World War II as they endure brutal combat and psychological strain in the Pacific theater.
• E. Caja de Muertos
  Caja de Muertos is a small, uninhabited island and nature reserve off the southern coast of Puerto Rico, known for its beaches, lighthouse, and protected wildlife.
• F. None of above. chosen