With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ramzan Kadyrov heads the Chechen Republic.
text_B: The Head of the Chechen Republic -LRB- formerly President of the Chechen Republic or President of Chechnya -RRB- is the highest office within the Political system of the Chechen Republic .. Political system. Politics of Chechnya. Chechen Republic. Chechnya. The office was instituted in 2003 during the course of the Second Chechen War , when the Russian federal government regained control over the region and after a constitutional referendum approved the current Constitution of the Chechen Republic .. Chechen Republic. Chechnya. Second Chechen War. Second Chechen War. constitutional referendum. Chechen constitutional referendum, 2003. Constitution of the Chechen Republic. Constitution of the Chechen Republic
related.