With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Shifty is a British singer.
text_B: This table displays the top-rated primetime television series of the 2002-03 season as measured by Nielsen Media Research .. 2002-03 season. 2002–03 United States network television schedule. Nielsen Media Research. Nielsen Media Research
not_related.