With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: A Game of Thrones is a novel written by George R. R. Martin.
text_B: The 1997 Calgary Stampeders '' ' finished in 2nd place in the West Division with a 10 -- 8 record .. 1997 CFL season. Calgary Stampeders. Calgary Stampeders. They appeared in the West Semi-Final and lost to the Saskatchewan Roughriders .. Saskatchewan Roughriders. Saskatchewan Roughriders
not_related.