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: Roger Greaves | Statement: [British Airways Flight 9 volcanic ash encounter, firstOfficer, Roger Greaves]

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: Roger Greaves
Triple: [British Airways Flight 9 volcanic ash encounter, firstOfficer, Roger Greaves]

Roger Greaves is a British airline pilot best known for serving as the first officer during the 1982 British Airways Flight 9 incident in which a Boeing 747 flew through volcanic ash and temporarily lost power in all four engines.