With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Leonardo da Vinci was a father.
text_B: Wallace & Gromit 's Thrill-O-Matic is an indoor family ride at the Pleasure Beach Blackpool , a theme park in Blackpool , Lancashire , England .. Pleasure Beach Blackpool. Pleasure Beach Blackpool. Blackpool. Blackpool. It opened in 2013 , replacing The Gold Mine ride , which closed in 2011 .. It is based on the Wallace and Gromit films and was opened in April 2013 by Nick Park , Amanda Thompson , Nick Thomas and Merlin Crossingham .. Wallace and Gromit. Wallace and Gromit. Nick Park. Nick Park. Amanda Thompson. Amanda Thompson ( businesswoman )
not_related.