With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Bertrand Russell's work has had a considerable influence on set theory.
text_B: Abakar Adoum -LRB- born 18 August 1984 -RRB- is a retired Chadian football player .. football. Association football. He has made three appearances for the Chad national football team .. Chad. Chad. football. Association football. Chad national football team. Chad national football team
not_related.