With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The RMS Titanic had many advanced features installed to increase safety.
text_B: Priodontognathus -LRB- meaning `` saw tooth jaw '' -RRB- was a genus of ankylosaurian dinosaur possibly from the Oxfordian-age Upper Jurassic Lower Calcareous Grit of Yorkshire , England .. Upper Jurassic. Upper Jurassic. saw. saw. tooth. tooth. jaw. jaw. genus. genus. dinosaur. dinosaur. Oxfordian. Oxfordian stage. Lower Calcareous Grit. Lower Calcareous Grit. Yorkshire. Yorkshire. England. England. It is a dubious genus based on a maxilla , and has been erroneously mixed up with iguanodonts and stegosaurs .. genus. genus. dubious. nomen dubium. maxilla. maxilla
not_related.