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: M2 protein | Statement: [respiratory syncytial virus, hasProtein, M2 protein]

Target entity: M2 protein
Context triple: [respiratory syncytial virus, hasProtein, M2 protein]

• A. matrix protein M
  Matrix protein M is a structural protein of vesicular stomatitis virus that plays a key role in virus assembly, budding, and suppression of host cell gene expression.
• B. M2HB
  The M2HB is a heavy-barrel variant of the Browning .50 caliber machine gun, widely used for its durability and sustained fire capability in ground, vehicle, and naval mounts.
• C. MIB-I
  MIB-I is the original version of the Management Information Base used with the SNMP protocol to define standard network management data objects.
• D. M-2
  M-2 is a major motorway designated as route M-2, typically serving as an important high-speed road corridor in its region.
• E. Sm proteins
  Sm proteins are a family of small, evolutionarily conserved RNA-binding proteins that form the core of small nuclear ribonucleoproteins (snRNPs) essential for pre-mRNA splicing in eukaryotic cells.
• 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: M2 protein
Triple: [respiratory syncytial virus, hasProtein, M2 protein]

M2 protein is a regulatory protein of respiratory syncytial virus that plays key roles in viral transcription and replication.

Target entity: M2 protein
Target entity description: M2 protein is a regulatory protein of respiratory syncytial virus that plays key roles in viral transcription and replication.

• A. matrix protein M
  Matrix protein M is a structural protein of vesicular stomatitis virus that plays a key role in virus assembly, budding, and suppression of host cell gene expression.
• B. M2HB
  The M2HB is a heavy-barrel variant of the Browning .50 caliber machine gun, widely used for its durability and sustained fire capability in ground, vehicle, and naval mounts.
• C. MIB-I
  MIB-I is the original version of the Management Information Base used with the SNMP protocol to define standard network management data objects.
• D. M-2
  M-2 is a major motorway designated as route M-2, typically serving as an important high-speed road corridor in its region.
• E. Sm proteins
  Sm proteins are a family of small, evolutionarily conserved RNA-binding proteins that form the core of small nuclear ribonucleoproteins (snRNPs) essential for pre-mRNA splicing in eukaryotic cells.
• F. None of above. chosen