With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Stephon Marbury has won championships.
text_B: The 2nd edition of the Miss Earth India beauty pageant will be held in September 2016 .. India. India. Miss Earth India. Miss Earth India. The winner will represent India at Miss Earth 2016 .. India. India. Miss Earth 2016. Miss Earth 2016
not_related.