With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The USS Constitution was a naval ship.
text_B: The World Chart Express chart was a show played on MTV Europe every Saturday , repeating then on Sundays and Fridays .. MTV Europe. MTV Europe. It was a top ten chart , consisting of popular songs across the world .. It was one of the few charts that actually plays music sung in different languages other than English , representing what 's truly popular in each country .. It had an Indian version which was played on a satellite TV network called Tata Sky for 5 weeks .. Indian. Demographics of India. Tata Sky. Tata Sky. Category  : Music chart television programs. Category  : MTV television series
not_related.