Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Historic Town of Guanajuato and Adjacent Mines' has mentioned 'River' in the following places:
Occurrence Sentence Text Source
This city was split by a small river that served as a main thoroughfare.
The city was split by a small river that serves as a main thoroughfare.
The main street into the city, called Belaunzarxc3xa1n, now runs for three km underground and follows the original course of the Guanajuato River.
The most important of these roads is Miguel Hidalgo or Belaunzarxc3xa1n, which carried the runoff from the river that used to divide the city in two.
Txc3xbanel La Galerexc3xb1a is the longest tunnel of this network and was excavated in the early 19th century to lead the Guanajuato River away from the center of the city.
In 1960s the old river tunnels were strengthened, as they were in a bad condition and showed signs of collapse and subsidence.
A second tunnel was dug during the late 1960s, which diverted the river much deeper.