With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Rio de Janeiro is on a continent.
text_B: Richard Pattison -LRB- born in 1975 -RRB- is a climber from Northumberland in Great Britain , but now resides in Sydney , Australia .. Northumberland. Northumberland. Great Britain. Great Britain. climber. climbing. Sydney. Sydney. Australia. Australia. He became well known in Northumberland after summitting Everest in 2009 , which created front page headlines in the local newspaper `` The Journal '' .. Northumberland. Northumberland. The Everest summit also attracted further media attention from BBC Look-North , BBC Radio Newcastle and marketing for the Northumberland County Council .. Northumberland. Northumberland. He currently writes a blog on `` The Journal '' website .
not_related.