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 Keeper of Traken | Statement: [Nyssa, introducedInStory, The Keeper of Traken]

Target entity: The Keeper of Traken
Context triple: [Nyssa, introducedInStory, The Keeper of Traken]

• A. The Keeper of Traken chosen
  "The Keeper of Traken" is a 1981 Doctor Who serial featuring the Fourth Doctor, notable for reintroducing the Master in a decayed form and setting up his acquisition of a new body.
• B. The Dosadi Experiment
  The Dosadi Experiment is a science fiction novel by Frank Herbert that explores themes of social engineering, oppression, and survival on a harsh, isolated planet.
• C. Citadel of the Stars
  Citadel of the Stars is the translated meaning of the name Osgiliath, the ancient and once-splendid capital city of Gondor in J.R.R. Tolkien’s Middle-earth legendarium.
• D. The Songs of Distant Earth
  The Songs of Distant Earth is a science fiction novel by Arthur C. Clarke that explores themes of interstellar travel, human colonization, and the emotional costs of leaving a dying Earth behind.
• E. The Emissary
  The Emissary is a dystopian novel by Yoko Tawada that imagines a post-disaster Japan where aging and youth are inverted, exploring themes of language, isolation, and resilience.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target predicate: introducedInStory
Context triple: [Nyssa, introducedInStory, The Keeper of Traken]

• A. firstAppearanceStory chosen
  Indicates the story in which an entity is depicted or mentioned for the first time.
• B. appearsInShortStoryBy
  Indicates that one entity is a character, element, or subject that appears within a short story authored by another entity.
• C. introduced
  Indicates that one entity caused another entity to become known, presented, or brought into use for the first time to a person, group, or context.
• D. introducedDuring
  Indicates that one entity was first brought into existence, use, or awareness within the time period, event, or context specified by the other entity.
• E. areIntroducedBy
  Indicates that one entity becomes known or presented to another entity through the action or mediation of a third party or process.
• F. None of above.