With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: George H. W. Bush has professionally conducted business with Bill Clinton.
text_B: The initials TSST may refer to  :. `` Tsst '' , an episode of the tenth season of South Park. Tsst. Tsst. Toshiba Samsung Storage Technology Corporation. Toshiba Samsung Storage Technology Corporation. Toshiba Samsung Storage Technology Corporation. Toxic shock syndrome toxin. Toxic shock syndrome toxin. Toxic shock syndrome toxin. Trier Social Stress Test. Trier Social Stress Test. Trier Social Stress Test
not_related.