With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Paul Newman acted.
text_B: The molecular formula C3H4N2 may refer to  :. Diazoles , a heterocycle with two nitrogen atoms in the ring. Imidazole , with non-adjacent nitrogen atoms. Imidazole. Imidazole. Pyrazole , with adjacent nitrogen atoms. Pyrazole. Pyrazole
not_related.