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: O(n) | Statement: [orthogonal group O(n), symbol, O(n)]

Target entity: O(n)
Context triple: [orthogonal group O(n), symbol, O(n)]

• A. O.
  O. is the middle initial of Mark O. Hatfield, the long-serving U.S. Senator and former Governor of Oregon.
• B. the O
  The O is MONA’s custom digital guide app that provides visitors with interactive information, commentary, and navigation throughout the Museum of Old and New Art.
• C. E(n)
  E(n) is the Euclidean group of dimension n, consisting of all distance-preserving transformations (rotations, reflections, and translations) of n-dimensional Euclidean space.
• D. O1
  O1 was the first observing run of the Advanced LIGO–Virgo gravitational-wave detectors, during which the earliest confirmed gravitational-wave signals from binary black hole mergers were recorded.
• E. O
  O is a renowned Cirque du Soleil aquatic-themed stage production in Las Vegas, celebrated for its elaborate water-based acrobatics and visual spectacle.
• 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: O(n)
Triple: [orthogonal group O(n), symbol, O(n)]

O(n) is the standard notation for the orthogonal group of degree n, consisting of all n×n real matrices that preserve the Euclidean inner product.

Target entity: O(n)
Target entity description: O(n) is the standard notation for the orthogonal group of degree n, consisting of all n×n real matrices that preserve the Euclidean inner product.

• A. O.
  O. is the middle initial of Mark O. Hatfield, the long-serving U.S. Senator and former Governor of Oregon.
• B. the O
  The O is MONA’s custom digital guide app that provides visitors with interactive information, commentary, and navigation throughout the Museum of Old and New Art.
• C. E(n)
  E(n) is the Euclidean group of dimension n, consisting of all distance-preserving transformations (rotations, reflections, and translations) of n-dimensional Euclidean space.
• D. O1
  O1 was the first observing run of the Advanced LIGO–Virgo gravitational-wave detectors, during which the earliest confirmed gravitational-wave signals from binary black hole mergers were recorded.
• E. O
  O is a renowned Cirque du Soleil aquatic-themed stage production in Las Vegas, celebrated for its elaborate water-based acrobatics and visual spectacle.
• F. None of above. chosen