At a point where the Ill divides into four canals, the tanners shared the waterways with the millers and fishermen.
Tanners,  millers and fishermen never shared the waterways of the four canals.
mnli hypothesis: Tanners,  millers and fishermen never shared the waterways of the four canals. premise: At a point where the Ill divides into four canals, the tanners shared the waterways with the millers and fishermen.