With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Jennifer Hudson is a singing coach.
text_B: Datuk Dr.Tengku Rethwan bin Tengku Mansor is a prominent Malaysian businessman who ventured into Selangor state politics .. Selangor. Selangor. Datuk. Malay titles. Dr.. Dr.. Tengku Rethwan is the chairman of President college .. He is one of the Barisan Nasional candidates for GE-13 .. Barisan Nasional. Barisan Nasional
not_related.