With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Gift of the Night Fury stars the voice of a comedian.
text_B: The purinosome is a putative multi-enzyme complex that carries out de novo purine biosynthesis within the cell .. multi-enzyme complex. multi-enzyme complex. purine biosynthesis. Purine metabolism#Biosynthesis. It is postulated to include all six of the human enzymes identified as direct participants in this ten-step biosynthetic pathway converting phosphoribosyl pyrophosphate to inosine monophosphate  :. phosphoribosyl pyrophosphate. phosphoribosyl pyrophosphate. inosine monophosphate. inosine monophosphate
not_related.