With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Audra McDonald purchased a signed Playbill of the first performance of A Raisin in the Sun,.
text_B: A Great Wall is a 1986 comedy-drama film written , directed and starring Peter Wang .. Peter Wang. Peter Wang. comedy-drama. comedy-drama. It was the first American feature film shot in the People 's Republic of China and was Kelvin Han Yee 's first film .
not_related.