With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: J.K. Rowling is the author of the Harry Potter novel series that began in 1997 with Harry Potter and the Philosopher's Stone.
text_B: The prions -LRB- or whalebirds -RRB- are small petrels in the genera Pachyptila and Halobaena .. Pachyptila. Pachyptila. Halobaena. Halobaena. genera. genera. They form one of the four groups within the Procellariidae -LRB- also referred to as the prions -RRB- , along with the gadfly petrels , shearwaters and fulmarine petrels .. Procellariidae. Procellariidae. The name comes from the Greek , meaning `` saw '' , a reference of the serrated edges of the birds ' saw-like bill .. saw. saw. bill. beak. They are found in the Southern Ocean and breed on a number of subantarctic islands .. Southern Ocean. Southern Ocean. subantarctic. subantarctic. Prions grow 20 to long , and have blue-grey upper parts and white underparts .. Three species of prion have flattened bills with a fringe of lamellae that act as strainers for zooplankton .. lamellae. Lamellae ( zoology ). strainers. Filter feeder. zooplankton. zooplankton. All prions are marine and feed on small crustacea such as copepods , ostracods , decapods , and krill , as well as some fish such as myctophids and nototheniids .. crustacea. crustacea. krill. krill. fish. fish
not_related.