With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Robin Thicke has worked with Childish Gambino.
text_B: The June 4th Revolution or June 4th Uprising was a popular and violent uprising in Ghana in 1979 that arose out of a combination of corruption , bad governance , lack of discipline in the army and frustrations in the army and among the general public .
not_related.