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: Leray–Hirsch theorem for sphere bundles | Statement: [Euler class, appearsIn, Leray–Hirsch theorem for sphere bundles]

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: Leray–Hirsch theorem for sphere bundles
Triple: [Euler class, appearsIn, Leray–Hirsch theorem for sphere bundles]

The Leray–Hirsch theorem for sphere bundles is a result in algebraic topology that describes the cohomology of a sphere bundle in terms of the cohomology of its base space and the Euler class of the bundle.