With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Line of Duty is a British police crime drama.
text_B: The 1983 Philippine Basketball Association -LRB- PBA -RRB- All-Filipino Conference was the first conference of the 1983 PBA season .. 1983 PBA season. Philippine Basketball Association. Philippine Basketball Association. 1983 PBA season. 1983 PBA season. It started on March 6 and ended on April 24 , 1983 .. 1983 PBA season
not_related.