With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Boeing 777 has a typical seating capacity of at least 3140.
text_B: Radha Kumari was a veteran film actress who appeared in South Indian films .. She acted over 700 films over four decades .. She is well known for her humor and played mother or grandmother roles in most of her films .
not_related.