With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Elizabeth II has seen major changes.
text_B: Riazuddin -LRB- born 15 December 1958 -RRB- is a Pakistani cricket umpire .. cricket umpire. umpire ( cricket ). He stood in 12 Test matches between 1990 and 2002 and 12 ODI games between 1990 and 2000 .. Test matches. Test cricket. ODI games. One Day International. He stood as one of the on-field umpires in the final of the 2010 -- 11 Quaid-e-Azam Trophy .
not_related.