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: South Side Main Line | Statement: [Green Line (CTA), hasBranch, South Side Main Line]

Target entity: South Side Main Line
Context triple: [Green Line (CTA), hasBranch, South Side Main Line]

• A. Frankford Avenue
  Frankford Avenue is a major thoroughfare in Philadelphia, Pennsylvania, running through several neighborhoods as a key commercial and transit corridor.
• 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. Elmwood Avenue
  Elmwood Avenue is a major street in Philadelphia, Pennsylvania, known for carrying a portion of SEPTA’s Subway–Surface trolley lines along its surface.
• D. Broad Street Line
  The Broad Street Line is a major north–south rapid transit subway line in Philadelphia operated by SEPTA, running primarily beneath Broad Street and serving key downtown and neighborhood destinations.
• E. Penn Line
  The Penn Line is a MARC commuter rail service in Maryland that runs along the busy Northeast Corridor between Washington, D.C., and Perryville, serving major intermediate stops such as Baltimore.
• 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: South Side Main Line
Triple: [Green Line (CTA), hasBranch, 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.

Target entity: South Side Main Line
Target entity description: 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.

• A. Frankford Avenue
  Frankford Avenue is a major thoroughfare in Philadelphia, Pennsylvania, running through several neighborhoods as a key commercial and transit corridor.
• 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. Elmwood Avenue
  Elmwood Avenue is a major street in Philadelphia, Pennsylvania, known for carrying a portion of SEPTA’s Subway–Surface trolley lines along its surface.
• D. Broad Street Line
  The Broad Street Line is a major north–south rapid transit subway line in Philadelphia operated by SEPTA, running primarily beneath Broad Street and serving key downtown and neighborhood destinations.
• E. Penn Line
  The Penn Line is a MARC commuter rail service in Maryland that runs along the busy Northeast Corridor between Washington, D.C., and Perryville, serving major intermediate stops such as Baltimore.
• F. None of above. chosen