With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Tanzania does not share borders with several landlocked countries.
text_B: Ignacio ` Nacho ' Carlos Gonzalez Cavallo -LRB- born 17 December 1971 -RRB- is an Argentine retired footballer who played as a goalkeeper .. Argentine. Argentina. footballer. Association football. goalkeeper. Goalkeeper ( association football )
not_related.