With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Shailene Woodley acts.
text_B: Zodiac is a non-fiction book written by Robert Graysmith about the unsolved serial murders committed by the `` Zodiac Killer '' in San Francisco in the late 1960s and early '70s .. Robert Graysmith. Robert Graysmith. non-fiction. non-fiction. book. book. Zodiac Killer. Zodiac Killer. San Francisco. San Francisco. Since its initial release in 1986 , Zodiac has sold 4 million copies worldwide .. Graysmith was a cartoonist for the San Francisco Chronicle and later also wrote Zodiac Unmasked .. San Francisco. San Francisco. cartoonist. cartoonist. San Francisco Chronicle. San Francisco Chronicle
not_related.