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: Mstislav Los | Statement: [Aelita, hasMainCharacter, Mstislav Los]

Target entity: Mstislav Los
Context triple: [Aelita, hasMainCharacter, Mstislav Los]

• A. Pyotr Ivanovich Miloslavsky
  Pyotr Ivanovich Miloslavsky was a Russian nobleman and statesman of the 17th century associated with the early development and administration of frontier towns in the Russian Empire.
• B. Viktor Mayevsky
  Viktor Mayevsky was a Soviet diplomat who served as an ambassador representing the interests of the USSR abroad.
• C. Aleksei Shostakov
  Aleksei Shostakov is a Marvel Comics character best known as the Soviet super-soldier and superhero Red Guardian, often depicted as a counterpart to Captain America.
• D. Vsevolod Zaderatsky
  Vsevolod Zaderatsky was a Ukrainian-Russian composer and pianist whose work, much of it written under political repression in the Soviet era, has been rediscovered and acclaimed for its originality and emotional depth.
• E. Ilya Danilovich Miloslavsky
  Ilya Danilovich Miloslavsky was a 17th-century Russian nobleman and boyar closely connected to the court of Tsar Alexei Mikhailovich through the influential Miloslavsky family.
• 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: Mstislav Los
Triple: [Aelita, hasMainCharacter, Mstislav Los]

Mstislav Los is the protagonist of the early Soviet science fiction film "Aelita," an engineer who travels to Mars and becomes entangled in a revolutionary uprising.

Target entity: Mstislav Los
Target entity description: Mstislav Los is the protagonist of the early Soviet science fiction film "Aelita," an engineer who travels to Mars and becomes entangled in a revolutionary uprising.

• A. Pyotr Ivanovich Miloslavsky
  Pyotr Ivanovich Miloslavsky was a Russian nobleman and statesman of the 17th century associated with the early development and administration of frontier towns in the Russian Empire.
• B. Viktor Mayevsky
  Viktor Mayevsky was a Soviet diplomat who served as an ambassador representing the interests of the USSR abroad.
• C. Aleksei Shostakov
  Aleksei Shostakov is a Marvel Comics character best known as the Soviet super-soldier and superhero Red Guardian, often depicted as a counterpart to Captain America.
• D. Vsevolod Zaderatsky
  Vsevolod Zaderatsky was a Ukrainian-Russian composer and pianist whose work, much of it written under political repression in the Soviet era, has been rediscovered and acclaimed for its originality and emotional depth.
• E. Ilya Danilovich Miloslavsky
  Ilya Danilovich Miloslavsky was a 17th-century Russian nobleman and boyar closely connected to the court of Tsar Alexei Mikhailovich through the influential Miloslavsky family.
• F. None of above. chosen