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: Lock 21 | Statement: [Merrickville Locks, hasLockNumber, Lock 21]

Target entity: Lock 21
Context triple: [Merrickville Locks, hasLockNumber, Lock 21]

• A. Lock 11 and Weir
  Lock 11 and Weir is a historic river navigation structure on the Murray River at Mildura, Australia, known for regulating water levels and enabling boat passage while serving as a popular local tourist attraction.
• B. The Lock
  The Lock is a celebrated 1824 landscape painting by English Romantic artist John Constable, depicting rural life along the River Stour with dramatic naturalistic detail.
• C. Lockout
  Lockout is a 2012 science fiction action film starring Guy Pearce as a wrongly convicted ex-CIA agent sent to rescue the U.S. president’s daughter from a violent prison riot in space.
• D. Teston Lock
  Teston Lock is a navigation lock on the River Medway in Kent, England, used to manage river levels and enable boat passage.
• E. The Unlocking
  "The Unlocking" is a song by hip hop band The Roots from their influential 1995 album *Do You Want More?!!!??!* that showcases their jazz-rap style and live-instrumentation approach.
• 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: Lock 21
Triple: [Merrickville Locks, hasLockNumber, Lock 21]

Lock 21 is one of the numbered canal locks at Merrickville on Canada’s historic Rideau Canal system.

Target entity: Lock 21
Target entity description: Lock 21 is one of the numbered canal locks at Merrickville on Canada’s historic Rideau Canal system.

• A. Lock 11 and Weir
  Lock 11 and Weir is a historic river navigation structure on the Murray River at Mildura, Australia, known for regulating water levels and enabling boat passage while serving as a popular local tourist attraction.
• B. The Lock
  The Lock is a celebrated 1824 landscape painting by English Romantic artist John Constable, depicting rural life along the River Stour with dramatic naturalistic detail.
• C. Lockout
  Lockout is a 2012 science fiction action film starring Guy Pearce as a wrongly convicted ex-CIA agent sent to rescue the U.S. president’s daughter from a violent prison riot in space.
• D. Teston Lock
  Teston Lock is a navigation lock on the River Medway in Kent, England, used to manage river levels and enable boat passage.
• E. The Unlocking
  "The Unlocking" is a song by hip hop band The Roots from their influential 1995 album *Do You Want More?!!!??!* that showcases their jazz-rap style and live-instrumentation approach.
• F. None of above. chosen