With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Following was funded by Christopher Nolan.
text_B: The black imperial pigeon -LRB- Ducula melanochroa -RRB- , also known as the Bismarck imperial pigeon , is a species of bird in the family Columbidae .. Columbidae. Columbidae. Ducula. Ducula. bird. bird. It is endemic to the Bismarck Archipelago where it lives in forests .. endemic. endemic. Bismarck Archipelago. Bismarck Archipelago
not_related.