With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Only Lovers Left Alive was written and directed by George Lucas.
text_B: Snap is a web development framework written in the Haskell programming language .. Haskell. Haskell ( programming language ). It is used by Silk , JanRain , Racemetric , www.lpaste.net , SooStone Inc , and Group Commerce .. Snap is also used as a lightweight , standalone Haskell server .. Haskell. Haskell ( programming language ). The popular static site generator Hakyll uses Snap for its preview mode .
not_related.