With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mother Teresa's birthday is September 5.
text_B: A Different Mirror  : A History of Multicultural America is a book by Ronald Takaki .. Ronald Takaki. Ronald Takaki. It received an Anisfield-Wolf Book Award in 1994 .. Anisfield-Wolf Book Award. Anisfield-Wolf Book Award
not_related.