Is there a neutral relationship between 'The Black River, at 71 km (44 miles), is the longest in Jamaica; it was an arterial route used to transport rum and lumber from the inland plantations.' and 'The Black River received its name because the water in its stream is actually black.', lacking direct logical ties?
The Black River, at 71 km (44 miles), is the longest in Jamaica; it was an arterial route used to transport rum and lumber from the inland plantations.###The Black River received its name because the water in its stream is actually black.