With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Gold is soft.
text_B: Lucius Tarquinius Ar .. f. Ar .. n. Collatinus was one of the first consuls of the Roman Republic in 509 BC , together with Lucius Junius Brutus .. Roman Republic. Roman Republic. Lucius Junius Brutus. Lucius Junius Brutus. The two men were leaders of the revolution which overthrew the Roman monarchy ; ironically Collatinus was forced to resign his office and go into exile as a result of the hatred he had helped engender in the people against the former ruling house .. overthrew the Roman monarchy. Overthrow of the Roman monarchy
not_related.