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: CD20 protein | Statement: [Rituxan, targets, CD20 protein]

Target entity: CD20 protein
Context triple: [Rituxan, targets, CD20 protein]

• A. Bruton tyrosine kinase
  Bruton tyrosine kinase is a key signaling enzyme in B cells that plays a crucial role in their development and function and is a major therapeutic target in certain blood cancers and autoimmune diseases.
• B. CD38
  CD38 is a cell surface glycoprotein with ectoenzyme and receptor functions, highly expressed on plasma cells and targeted in therapies for multiple myeloma and other hematologic malignancies.
• C. programmed death-ligand 1
  Programmed death-ligand 1 (PD-L1) is an immune checkpoint protein expressed on various cells that suppresses T-cell activity by engaging PD-1, enabling tumors to evade immune surveillance.
• D. Rituxan
  Rituxan is a monoclonal antibody drug (rituximab) widely used to treat certain blood cancers and autoimmune diseases by targeting the CD20 protein on B cells.
• E. CD4+ T cells
  CD4+ T cells are a subset of immune cells that coordinate and regulate the body’s adaptive immune response, playing a central role in defending against infections.
• 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: CD20 protein
Triple: [Rituxan, targets, CD20 protein]

CD20 protein is a cell-surface antigen found primarily on B lymphocytes and is a key therapeutic target in certain autoimmune diseases and B-cell malignancies.

Target entity: CD20 protein
Target entity description: CD20 protein is a cell-surface antigen found primarily on B lymphocytes and is a key therapeutic target in certain autoimmune diseases and B-cell malignancies.

• A. Bruton tyrosine kinase
  Bruton tyrosine kinase is a key signaling enzyme in B cells that plays a crucial role in their development and function and is a major therapeutic target in certain blood cancers and autoimmune diseases.
• B. CD38
  CD38 is a cell surface glycoprotein with ectoenzyme and receptor functions, highly expressed on plasma cells and targeted in therapies for multiple myeloma and other hematologic malignancies.
• C. programmed death-ligand 1
  Programmed death-ligand 1 (PD-L1) is an immune checkpoint protein expressed on various cells that suppresses T-cell activity by engaging PD-1, enabling tumors to evade immune surveillance.
• D. Rituxan
  Rituxan is a monoclonal antibody drug (rituximab) widely used to treat certain blood cancers and autoimmune diseases by targeting the CD20 protein on B cells.
• E. CD4+ T cells
  CD4+ T cells are a subset of immune cells that coordinate and regulate the body’s adaptive immune response, playing a central role in defending against infections.
• F. None of above. chosen