With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Doctor Who is produced by the president.
text_B: Xylorycta parthenistis is a moth in the Xyloryctidae family .. Xyloryctidae. Xyloryctidae. Xylorycta. Xylorycta. moth. moth. It was described by Lower in 1902 .. It is found in Australia , where it has been recorded from the Northern Territory .. Australia. Australia. Northern Territory. Northern Territory. The wingspan is about 32 mm .. wingspan. wingspan. The forewings are shining snow-white with a fine pale ochreous line along the costa from the base to the apex , somewhat dilated posteriorly .. The hindwings are shining snow-white .
not_related.