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: North Side Main Line | Statement: [Addison station (CTA Red Line), formerRailwayLine, North Side Main Line]

Target entity: North Side Main Line
Context triple: [Addison station (CTA Red Line), formerRailwayLine, North Side Main Line]

• A. South Side Main Line
  The South Side Main Line is a key elevated rapid transit corridor on Chicago's 'L' system that carries multiple Green Line services through the city's South Side.
• B. Dyre Avenue Line
  The Dyre Avenue Line is a New York City Subway line in the Bronx operated by the IRT division, primarily serving the 5 train along a former New York, Westchester and Boston Railway right-of-way.
• C. Myrtle Avenue Line
  The Myrtle Avenue Line is a New York City Subway line in Brooklyn and Queens, primarily served by the M train.
• D. Fulton Street Line
  The Fulton Street Line is a major New York City Subway corridor in Brooklyn and Manhattan that carries IND services such as the A and C trains along Fulton Street.
• E. Jerome Avenue Line
  The Jerome Avenue Line is a New York City Subway route in the Bronx, primarily served by the 4 train and running along Jerome Avenue from the Yankee Stadium area toward the northern end of the borough.
• 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: North Side Main Line
Triple: [Addison station (CTA Red Line), formerRailwayLine, North Side Main Line]

The North Side Main Line was a historic elevated rapid transit route in Chicago that formed a key part of the early "L" system and later evolved into segments of today’s Red Line.

Target entity: North Side Main Line
Target entity description: The North Side Main Line was a historic elevated rapid transit route in Chicago that formed a key part of the early "L" system and later evolved into segments of today’s Red Line.

• A. South Side Main Line
  The South Side Main Line is a key elevated rapid transit corridor on Chicago's 'L' system that carries multiple Green Line services through the city's South Side.
• B. Dyre Avenue Line
  The Dyre Avenue Line is a New York City Subway line in the Bronx operated by the IRT division, primarily serving the 5 train along a former New York, Westchester and Boston Railway right-of-way.
• C. Myrtle Avenue Line
  The Myrtle Avenue Line is a New York City Subway line in Brooklyn and Queens, primarily served by the M train.
• D. Fulton Street Line
  The Fulton Street Line is a major New York City Subway corridor in Brooklyn and Manhattan that carries IND services such as the A and C trains along Fulton Street.
• E. Jerome Avenue Line
  The Jerome Avenue Line is a New York City Subway route in the Bronx, primarily served by the 4 train and running along Jerome Avenue from the Yankee Stadium area toward the northern end of the borough.
• F. None of above. chosen