With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Long Run was recorded by a band.
text_B: Donald Evan McAllister was a Canadian ichthyologist who published over 625 scientific papers , books , popular articles and book reviews in his career , which lasted 45 years from 1958 until his early retirement in 1993 .. ichthyologist. ichthyologist
not_related.