With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Robert Browning was a playwright.
text_B: Llandeilo was an Urban District in Carmarthenshire between 1894 and 1974 and replaced by Dinefwr .. Carmarthenshire. Carmarthenshire. Dinefwr. Dinefwr Borough Council. More details on the Carmarthenshire Archive Service website. Carmarthenshire. Carmarthenshire. Category  : Urban districts of Wales. Category  : Carmarthenshire. Carmarthenshire. Carmarthenshire
not_related.