With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The House of Lusignan ruled the Levant.
text_B: Portals of Grace is the first solo release from Azam Ali .. Azam Ali. Azam Ali. Prior to this album , she had released music with the group VAS .. VAS. VAS ( band )
not_related.