With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Rajon Rondo is a fourteen-time NBA All-Defensive Team member.
text_B: Not to be confused with Mynydd Twyn-glas near Cwmbran .. Mynydd Twyn-glas. Mynydd Twyn-glas. Pen Twyn Glas is a top of Pen Allt-mawr in the Black Mountains in south-eastern Wales .. Pen Allt-mawr. Pen Allt-mawr. Black Mountains. Black Mountains, Wales. Wales. Wales. It lies in between Pen Allt-mawr and Mynydd Llysiau .. Mynydd Llysiau. Mynydd Llysiau. Pen Allt-mawr. Pen Allt-mawr. The summit is merely a grassy bump on the ridge marked by a pile of stones .
not_related.