With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: Prior to the events of the film, replicants became forbidden on Earth after a bloody off-world mutiny by a band of Nexus-6 models. Two weeks before the starting point of the film, six Nexus-6 replicants escaped the off-world colonies, killing 23 people and taking a shuttle to Earth; the film focuses on the pursuit of the replicants by Rick Deckard, a category of police-officer bounty-hunter called a "Blade Runner", who investigates, tests, and retires replicants found on Earth.
text_B: Were there likely regulated replicant manufacturing plants on Earth during the events of the film?
NO.