With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Margot Frank died in April 1945.
text_B: Not to be confused with 206th -LRB- 2nd Essex -RRB- Brigade. 206th Independent Infantry Brigade was a Home Defence formation of the British Army during World War II .. British Army. British Army. World War II. World War II
not_related.