The Marais district, north of the two islands in the river, was built on land reclaimed from the marshes.
The land couldn't be reclaimed from the marshes, destroying the plans for the Marais district.
mnli hypothesis: The land couldn't be reclaimed from the marshes, destroying the plans for the Marais district. premise: The Marais district, north of the two islands in the river, was built on land reclaimed from the marshes.