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: German U-boat U-20 | Statement: [sinking of the RMS Lusitania, attacker, German U-boat U-20]

Target entity: German U-boat U-20
Context triple: [sinking of the RMS Lusitania, attacker, German U-boat U-20]

• A. German U-boat U-47
  German U-boat U-47 was a World War II German submarine commanded by Günther Prien, best known for its daring and highly successful 1939 raid into the British naval base at Scapa Flow.
• B. German submarine U-96
  German submarine U-96 was a Type VIIC U-boat of Nazi Germany’s Kriegsmarine in World War II, best known as the real-life inspiration for the novel and film "Das Boot."
• C. German submarine U-75
  German submarine U-75 was a Type VIIB U-boat of Nazi Germany's Kriegsmarine that operated during World War II, conducting Atlantic patrols and commerce raiding before being sunk in 1941.
• D. U-9
  U-9 was a German World War I U-boat famed for its early and dramatic successes in submarine warfare, including the sinking of three British cruisers in a single engagement in 1914.
• E. German submarine U-616
  German submarine U-616 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine that operated in the Mediterranean during World War II, engaging Allied naval forces before being sunk in 1944.
• 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: German U-boat U-20
Triple: [sinking of the RMS Lusitania, attacker, German U-boat U-20]

German U-boat U-20 was an Imperial German Navy submarine from World War I, best known for torpedoing the British ocean liner RMS Lusitania in 1915, an event that significantly influenced public opinion against Germany.

Target entity: German U-boat U-20
Target entity description: German U-boat U-20 was an Imperial German Navy submarine from World War I, best known for torpedoing the British ocean liner RMS Lusitania in 1915, an event that significantly influenced public opinion against Germany.

• A. German U-boat U-47
  German U-boat U-47 was a World War II German submarine commanded by Günther Prien, best known for its daring and highly successful 1939 raid into the British naval base at Scapa Flow.
• B. German submarine U-96
  German submarine U-96 was a Type VIIC U-boat of Nazi Germany’s Kriegsmarine in World War II, best known as the real-life inspiration for the novel and film "Das Boot."
• C. German submarine U-75
  German submarine U-75 was a Type VIIB U-boat of Nazi Germany's Kriegsmarine that operated during World War II, conducting Atlantic patrols and commerce raiding before being sunk in 1941.
• D. U-9
  U-9 was a German World War I U-boat famed for its early and dramatic successes in submarine warfare, including the sinking of three British cruisers in a single engagement in 1914.
• E. German submarine U-616
  German submarine U-616 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine that operated in the Mediterranean during World War II, engaging Allied naval forces before being sunk in 1944.
• F. None of above. chosen