With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Jim Crow laws were enacted after the Reconstruction period following the Civil War.
text_B: Leighton Auxiliary Field is a former facility of the United States Army Air Forces located in Leighton , Alabama .. United States Army Air Forces. United States Army Air Forces. Constructed after 1941 as an auxiliary to the nearby Courtland Army Air Field , it was turned back into farmland after the war .. Courtland Army Air Field. Courtland Army Air Field
not_related.