With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Democratic Republic of the Congo is a region.
text_B: sn-Glycerol 1-phosphate is a phosphoric ester of glycerol , which is a component of archea-specific ether lipids .. phosphoric ester. phosphoric ester. glycerol. glycerol. archea. archea. Equally appropriate names in biochemical context include glycero-1-phosphate , 1-O-phosphonoglycerol , and 1-phosphoglycerol .. From a historical reason , it is also known as - glycerol 1-phosphate , - glycerol 3-phosphate , and - α-glycerophosphoric acid .. glycerol. glycerol
not_related.