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: SO(32) heterotic string theory | Statement: [E8×E8 heterotic string theory, relatedTo, SO(32) heterotic string theory]

Target entity: SO(32) heterotic string theory
Context triple: [E8×E8 heterotic string theory, relatedTo, SO(32) heterotic string theory]

• A. SO(32) heterotic string theory chosen
  SO(32) heterotic string theory is a ten-dimensional, anomaly-free string theory whose gauge symmetry group is SO(32), playing a key role in early unified models of fundamental interactions.
• B. E8×E8 heterotic string theory
  E8×E8 heterotic string theory is a ten-dimensional string theory whose gauge symmetry is based on the product of two exceptional Lie groups E8, making it a leading candidate for unifying gravity with the forces and particles of the Standard Model.
• C. Type I string theory
  Type I string theory is a ten-dimensional supersymmetric string theory featuring both open and closed strings with SO(32) gauge symmetry and unoriented world-sheets.
• D. Type IIA string theory
  Type IIA string theory is a ten-dimensional supersymmetric string theory featuring non-chiral (left-right symmetric) fermions and D-branes, and is realized as a low-energy limit or compactification of M-theory.
• E. heterotic supergravity
  Heterotic supergravity is the low-energy effective field theory of heterotic string theory, combining ten-dimensional supergravity with non-abelian gauge fields in a way that allows anomaly cancellation via the Green–Schwarz mechanism.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.