With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Americans is a web service.
text_B: The Malagasy records in swimming are the fastest ever performances of swimmers from Madagascar , which are recognised and ratified by the Federation Malgache De Natation .. Madagascar. Madagascar. Federation Malgache De Natation. Federation Malgache De Natation. All records were set in finals unless noted otherwise .
not_related.