With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Legion was created in October 2015.
text_B: Audio processing may refer to  :. Audio signal processing. Audio signal processing. Audio signal processing. Auditory system , particularly in the context of auditory processing disorder. Auditory system. Auditory system. auditory processing disorder. auditory processing disorder
not_related.