With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ellyse Perry is Australian.
text_B: Musicophilia  : Tales of Music and the Brain is a 2007 book by neurologist Oliver Sacks about music and the human brain .. Oliver Sacks. Oliver Sacks. music. music. human brain. human brain. The book was released on October 16 , 2007 and published by Knopf .. Knopf. Alfred A. Knopf. Four case studies from the book are featured in the NOVA program Musical Minds aired on June 30 , 2009 .. NOVA. Nova ( TV series ). Musical Minds. Musical Minds
not_related.