Bull Run has provided the city's drinking water for more than a century, collecting rain water and melted snow from the shoulders of Mt. Hood.
(Bull Run; has provided; the city's drinking water; T:for more than a century) Context(Bull Run has provided,List([0, 21))):(Bull Run; has provided the city's drinking water collecting; rain water)
Bull Run has provided,List([0, 21))
Bull Run Bull Run
has provided has provided the city's drinking water collecting
the city's drinking water T:for more than a century
rain water