With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Abnormal bleeding is a potential sign of cancer.
text_B: Caleb West , Master Diver is a novel published in 1898 by Francis Hopkinson Smith that was the best selling book in the United States in 1898 .. Francis Hopkinson Smith. Francis Hopkinson Smith. best selling book in the United States in 1898. Publishers Weekly list of bestselling novels in the United States in the 1890s#1898. It was first serialized in The Atlantic Monthly from October 1897 to March 1898 , and was published in book form by Houghton Mifflin in April 1898 with illustrations by Malcolm Fraser and Arthur I. Keller .. Malcolm Fraser. Malcolm Fraser ( artist ). Arthur I. Keller. Arthur I. Keller. The Atlantic Monthly. The Atlantic. Houghton Mifflin. Houghton Mifflin. The book is based on Smith 's experience in the building of the Race Rock Light near Fishers Island , New York in the 1870s .. Race Rock Light. Race Rock Light
not_related.