With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: David Mazouz first saw light in 2001.
text_B: Mediavideo is the teletext service broadcast on the primary Mediaset television channels -LRB- Rete 4 , Canale 5 , Italia 1 -RRB- in Italy .. teletext. teletext. Mediaset. Mediaset. Rete 4. Rete 4. Canale 5. Canale 5. Italia 1. Italia 1. Italy. Italy
not_related.