With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Nile fails to run through Congo-Kinshasa.
text_B: The lavender scare refers to a witch hunt and mass firings of gay people in the 1950s from the United States government .. witch hunt. moral panic. It paralleled the anti-communist campaign known as McCarthyism and the Second Red Scare .. anti-communist. Anti-communism. McCarthyism. McCarthyism. Second Red Scare. McCarthyism. Gay men and lesbians were said to be security risks and communist sympathizers , which led to the call to remove them from state employment .. Former U.S. Senator Alan K. Simpson has written  : `` The so-called ` Red Scare ' has been the main focus of most historians of that period of time .. Alan K. Simpson. Alan K. Simpson. A lesser-known element ... and one that harmed far more people was the witch-hunt McCarthy and others conducted against homosexuals . ''
not_related.