With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Bruce Lee was only a professional martial artist and unable to act.
text_B: In enzymology , a tagatose kinase is an enzyme that catalyzes the chemical reaction. enzymology. enzymology. enzyme. enzyme. catalyzes. catalysis. chemical reaction. chemical reaction. ATP + D-tagatose ADP + D-tagatose 6-phosphate. ATP. adenosine triphosphate. D-tagatose. D-tagatose. ADP. adenosine diphosphate. D-tagatose 6-phosphate. D-tagatose 6-phosphate. Thus , the two substrates of this enzyme are ATP and D-tagatose , whereas its two products are ADP and D-tagatose 6-phosphate .. enzyme. enzyme. substrates. substrate ( biochemistry ). ATP. adenosine triphosphate. D-tagatose. D-tagatose. products. product ( chemistry ). ADP. adenosine diphosphate. D-tagatose 6-phosphate. D-tagatose 6-phosphate. This enzyme belongs to the family of transferases , specifically those transferring phosphorus-containing groups -LRB- phosphotransferases -RRB- with an alcohol group as acceptor .. enzyme. enzyme. The systematic name of this enzyme class is ATP  :D - tagatose 6-phosphotransferase .. enzyme. enzyme. ATP. adenosine triphosphate. phosphotransferase. phosphotransferase. systematic name. List of enzymes. Other names in common use include tagatose 6-phosphate kinase -LRB- phosphorylating -RRB- , D-tagatose 6-phosphate kinase , and tagatose-6-phosphate kinase .. D-tagatose. D-tagatose. D-tagatose 6-phosphate. D-tagatose 6-phosphate. This enzyme participates in galactose metabolism .. enzyme. enzyme. galactose metabolism. galactose metabolism
not_related.