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: tangent half-angle substitution | Statement: [Weierstrass substitution, alsoKnownAs, tangent half-angle substitution]

Target entity: tangent half-angle substitution
Context triple: [Weierstrass substitution, alsoKnownAs, tangent half-angle substitution]

• A. Radau
  Radau is a river in Lower Saxony, Germany, known as a tributary of the Oker and for flowing through the Harz region.
• B. Seča
  Seča is a small coastal settlement in southwestern Slovenia, situated near the town of Piran on the Adriatic Sea.
• C. Tangen
  Tangen is a former settlement in Norway that was incorporated into the city of Drammen through a municipal merger.
• D. Tangtse
  Tangtse is a village in the Leh district of Ladakh, India, situated along key routes between the Indus Valley and the Pangong Tso region in the Himalayas.
• E. Trizina
  Trizina is a modern Greek settlement located near the ancient city of Troezen in the northeastern Peloponnese.
• 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: tangent half-angle substitution
Triple: [Weierstrass substitution, alsoKnownAs, tangent half-angle substitution]

Tangent half-angle substitution is a trigonometric technique that converts integrals involving sine and cosine into rational functions by substituting in terms of the tangent of half the angle.

Target entity: tangent half-angle substitution
Target entity description: Tangent half-angle substitution is a trigonometric technique that converts integrals involving sine and cosine into rational functions by substituting in terms of the tangent of half the angle.

• A. Radau
  Radau is a river in Lower Saxony, Germany, known as a tributary of the Oker and for flowing through the Harz region.
• B. Seča
  Seča is a small coastal settlement in southwestern Slovenia, situated near the town of Piran on the Adriatic Sea.
• C. Tangen
  Tangen is a former settlement in Norway that was incorporated into the city of Drammen through a municipal merger.
• D. Tangtse
  Tangtse is a village in the Leh district of Ladakh, India, situated along key routes between the Indus Valley and the Pangong Tso region in the Himalayas.
• E. Trizina
  Trizina is a modern Greek settlement located near the ancient city of Troezen in the northeastern Peloponnese.
• F. None of above. chosen