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: ICAO airspace classes | Statement: [Norwegian airspace, classifiedAccordingTo, ICAO airspace classes]

Target entity: ICAO airspace classes
Context triple: [Norwegian airspace, classifiedAccordingTo, ICAO airspace classes]

• A. Class A airspace
  Class A airspace is the highest controlled airspace layer in the United States, typically used for high-altitude en route flight under instrument flight rules (IFR) by commercial and other high-performance aircraft.
• B. Class D airspace
  Class D airspace is a category of controlled airspace surrounding smaller airports with an operational control tower, where pilots must establish two-way radio communication with air traffic control before entering.
• C. Class E airspace
  Class E airspace is a category of controlled airspace that typically begins at various altitudes above the surface and extends up to but not including Class A airspace, where IFR and many VFR operations are managed under air traffic control.
• D. Class C airspace
  Class C airspace is a category of controlled airspace around busy airports that requires two-way radio communication and air traffic control clearance for participating aircraft.
• E. Class G airspace
  Class G airspace is uncontrolled airspace where air traffic control does not provide separation services, and pilots operate primarily under visual flight rules with minimal regulatory requirements.
• 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: ICAO airspace classes
Triple: [Norwegian airspace, classifiedAccordingTo, ICAO airspace classes]

ICAO airspace classes are a standardized global system that categorizes airspace into lettered classes (A through G) to define rules, separation requirements, and services for different types of air traffic.

Target entity: ICAO airspace classes
Target entity description: ICAO airspace classes are a standardized global system that categorizes airspace into lettered classes (A through G) to define rules, separation requirements, and services for different types of air traffic.

• A. Class A airspace
  Class A airspace is the highest controlled airspace layer in the United States, typically used for high-altitude en route flight under instrument flight rules (IFR) by commercial and other high-performance aircraft.
• B. Class D airspace
  Class D airspace is a category of controlled airspace surrounding smaller airports with an operational control tower, where pilots must establish two-way radio communication with air traffic control before entering.
• C. Class E airspace
  Class E airspace is a category of controlled airspace that typically begins at various altitudes above the surface and extends up to but not including Class A airspace, where IFR and many VFR operations are managed under air traffic control.
• D. Class C airspace
  Class C airspace is a category of controlled airspace around busy airports that requires two-way radio communication and air traffic control clearance for participating aircraft.
• E. Class G airspace
  Class G airspace is uncontrolled airspace where air traffic control does not provide separation services, and pilots operate primarily under visual flight rules with minimal regulatory requirements.
• F. None of above. chosen

Target predicate: classifiedAccordingTo
Context triple: [Norwegian airspace, classifiedAccordingTo, ICAO airspace classes]

• A. classificationAccordingTo chosen
  Indicates that an entity is assigned a particular class, type, or category as defined or determined by a specified source, standard, or authority.
• B. areClassifiedBy
  Indicates that entities are assigned to one or more categories, types, or classes according to a specified classification scheme.
• C. classificationIntroduced
  Indicates that one entity has introduced or established a particular classification or categorization for another entity.
• D. classified
  Indicates that one entity has assigned another entity to a specific category, group, or type based on defined criteria.
• E. classificationSystemBasedOn
  Indicates that one classification system is organized, defined, or derived using another classification system as its basis or reference framework.
• F. None of above.