With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: In 2004, Cowboy was performed.
text_B: Gunbuster , known in Japan as , is a six-episode anime OVA series created by Gainax in 1988 .. Gainax. Gainax. anime. anime. OVA. Original Video Animation. It was the directorial debut of Hideaki Anno , best known as the director of Neon Genesis Evangelion .. Hideaki Anno. Hideaki Anno. Neon Genesis Evangelion. Neon Genesis Evangelion ( TV ). The title is a combination of the titles of classic tennis anime Aim for the Ace !. anime. anime. tennis. tennis. and hit action drama film Top Gun , whose plot inspired Gunbusters .. Top Gun. Top Gun. To celebrate Gainax 's 20th anniversary in 2004 , an official sequel to Gunbuster , Diebuster -LRB- or Gunbuster 2 -RRB- , was released as an OVA .. Gainax. Gainax. OVA. Original Video Animation. Diebuster. Diebuster. The sequel features new characters and mecha , but retains the format and many of the concepts of the original series .
not_related.