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: Mar Saba letter | Statement: [Secret Gospel of Mark, knownFrom, Mar Saba letter]

Target entity: Mar Saba letter
Context triple: [Secret Gospel of Mark, knownFrom, Mar Saba letter]

• A. Letter of Jesus to Abgar
  The Letter of Jesus to Abgar is an early Christian apocryphal text purporting to record a correspondence between Jesus and King Abgar of Edessa, often cited in discussions of legendary traditions about Jesus outside the canonical New Testament.
• B. Lachish Letters
  The Lachish Letters are a collection of inscribed pottery shards from the late Iron Age that provide firsthand accounts of Judah’s final days before the Babylonian conquest.
• C. Letter to Serapion
  Letter to Serapion is a theological treatise by Athanasius of Alexandria that defends the divinity and personhood of the Holy Spirit within Trinitarian doctrine.
• D. Anaphora of Addai and Mari
  The Anaphora of Addai and Mari is one of the oldest Eucharistic prayers in continuous use in Eastern Christianity, particularly within the East Syriac liturgical tradition.
• E. Epistle of Barnabas
  The Epistle of Barnabas is an early Christian work of exhortation and biblical interpretation, traditionally attributed to Barnabas, that offers an allegorical reading of the Old Testament and reflects the developing separation between Christianity and Judaism.
• 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: Mar Saba letter
Triple: [Secret Gospel of Mark, knownFrom, Mar Saba letter]

The Mar Saba letter is a controversial manuscript fragment attributed to Clement of Alexandria that allegedly quotes and describes a longer, secret version of the Gospel of Mark.

Target entity: Mar Saba letter
Target entity description: The Mar Saba letter is a controversial manuscript fragment attributed to Clement of Alexandria that allegedly quotes and describes a longer, secret version of the Gospel of Mark.

• A. Letter of Jesus to Abgar
  The Letter of Jesus to Abgar is an early Christian apocryphal text purporting to record a correspondence between Jesus and King Abgar of Edessa, often cited in discussions of legendary traditions about Jesus outside the canonical New Testament.
• B. Lachish Letters
  The Lachish Letters are a collection of inscribed pottery shards from the late Iron Age that provide firsthand accounts of Judah’s final days before the Babylonian conquest.
• C. Letter to Serapion
  Letter to Serapion is a theological treatise by Athanasius of Alexandria that defends the divinity and personhood of the Holy Spirit within Trinitarian doctrine.
• D. Anaphora of Addai and Mari
  The Anaphora of Addai and Mari is one of the oldest Eucharistic prayers in continuous use in Eastern Christianity, particularly within the East Syriac liturgical tradition.
• E. Epistle of Barnabas
  The Epistle of Barnabas is an early Christian work of exhortation and biblical interpretation, traditionally attributed to Barnabas, that offers an allegorical reading of the Old Testament and reflects the developing separation between Christianity and Judaism.
• F. None of above. chosen