With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Tardigrades have been found in mud volcanoes and the Antarctic.
text_B: The Perdido Key beach mouse -LRB- Peromyscus polionotus trissyllepsis -RRB- is an endangered subspecies of the oldfield mouse .. Peromyscus. Peromyscus. oldfield mouse. oldfield mouse. It is found on Perdido Key , Florida .. The small white and gray mouse , weighing only 13 - , blends in well with the white quartz sand of northern Gulf coast beaches .
not_related.