With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: Prosecutors linked the men to the executions of the three Bytyqi brothers ( Illy , Mehmet and Agron ) , American citizens who went to Kosovo in 1999 to help ethnic Albanians fighting Yugoslav and Serbian forces in the province .
text_B: 1999 is a natural entity
not-entailed.