With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mickey Rooney was one of MGM's actors.
text_B: Varattar is a tributary of the Pamba River , the third longest river in the South Indian state of Kerala .. Pamba River. Pamba River. Kerala. Kerala. It flows through the outskirts of Chengannur .. Chengannur. Chengannur. Category  : Rivers of Kerala. Kerala. Kerala
not_related.