With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ethiopia has areas that can be described as jungles.
text_B: This event was held on February 2 , 2013 as a part of the 2013 UCI Cyclo-cross World Championships in Louisville , Kentucky , United States .. 2013 UCI Cyclo-cross World Championships. 2013 UCI Cyclo-cross World Championships. Louisville. Louisville, Kentucky. Kentucky. Kentucky. Marianne Vos dominated the race and took home her sixth cyclo-cross world title .. Marianne Vos. Marianne Vos
not_related.