With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Nice & Slow was released in May of 1998.
text_B: The style of Portuguese sovereign has varied over the years .. style. Style ( manner of address ). Portuguese sovereign. king of Portugal. Currently , there is no Portuguese monarch but there is a pretender  : Duarte Pio , Duke of Braganza .. Portuguese monarch. Portuguese monarch. He styles himself following some of the ancient traditions of the Portuguese monarchy .
not_related.