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: IRT Sixth Avenue elevated | Statement: [IND Sixth Avenue Line, formerStructureReplaced, IRT Sixth Avenue elevated]

Target entity: IRT Sixth Avenue elevated
Context triple: [IND Sixth Avenue Line, formerStructureReplaced, IRT Sixth Avenue elevated]

• A. Liberty Avenue elevated
  Liberty Avenue elevated is a former elevated rapid transit line in Brooklyn and Queens that once carried BMT trains along Liberty Avenue before being partially incorporated into the IND Fulton Street and Rockaway Lines.
• B. Sixth Avenue express service
  The Sixth Avenue express service is a New York City Subway route pattern that runs express along the IND Sixth Avenue Line in Manhattan, providing faster north–south service than the local trains on the same corridor.
• C. IND Sixth Avenue Line
  The IND Sixth Avenue Line is a major New York City Subway trunk line in Manhattan running primarily beneath Sixth Avenue and served by several B Division routes.
• D. Eighth Avenue Line in Manhattan
  The Eighth Avenue Line in Manhattan is a major New York City Subway trunk line running under Eighth Avenue, carrying several IND services through Midtown and Upper Manhattan.
• E. Main Line Elevated
  Main Line Elevated was Boston’s original elevated rapid transit line that formed the core of what is now the MBTA Orange Line.
• 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: IRT Sixth Avenue elevated
Triple: [IND Sixth Avenue Line, formerStructureReplaced, IRT Sixth Avenue elevated]

The IRT Sixth Avenue elevated was an early elevated railway line in Manhattan that once ran above Sixth Avenue before being demolished and replaced by the underground IND Sixth Avenue Line.

Target entity: IRT Sixth Avenue elevated
Target entity description: The IRT Sixth Avenue elevated was an early elevated railway line in Manhattan that once ran above Sixth Avenue before being demolished and replaced by the underground IND Sixth Avenue Line.

• A. Liberty Avenue elevated
  Liberty Avenue elevated is a former elevated rapid transit line in Brooklyn and Queens that once carried BMT trains along Liberty Avenue before being partially incorporated into the IND Fulton Street and Rockaway Lines.
• B. Sixth Avenue express service
  The Sixth Avenue express service is a New York City Subway route pattern that runs express along the IND Sixth Avenue Line in Manhattan, providing faster north–south service than the local trains on the same corridor.
• C. IND Sixth Avenue Line
  The IND Sixth Avenue Line is a major New York City Subway trunk line in Manhattan running primarily beneath Sixth Avenue and served by several B Division routes.
• D. Eighth Avenue Line in Manhattan
  The Eighth Avenue Line in Manhattan is a major New York City Subway trunk line running under Eighth Avenue, carrying several IND services through Midtown and Upper Manhattan.
• E. Main Line Elevated
  Main Line Elevated was Boston’s original elevated rapid transit line that formed the core of what is now the MBTA Orange Line.
• F. None of above. chosen

Target predicate: formerStructureReplaced
Context triple: [IND Sixth Avenue Line, formerStructureReplaced, IRT Sixth Avenue elevated]

• A. replacedStructure
  Indicates that one structure has been substituted for, or taken the place of, another structure.
• B. replacedStructureOpened
  Indicates that a previously existing structure has been removed or superseded and the new replacement structure has been opened or put into service.
• C. placedBy
  Indicates that one entity was positioned, set, or put in a location or context by another entity.
• D. previousStructure chosen
  Indicates that one structure directly precedes another in a defined sequence or configuration.
• E. replacedWith
  Indicates that one entity has been substituted or superseded by another entity, taking over its role, function, or position.
• F. None of above.