That year, after five years of study, testimony and written comment, the corps proposed to change the river's flow.
(the corps; proposed; to change the river's flow; T:That year; T:after five years of study, testimony and written comment) Context(the corps proposed,List([69, 87))):(the corps; proposed to change; the river's flow)
the corps proposed,List([69, 87))
the corps the corps
proposed proposed to change
to change the river's flow T:That year T:after five years of study, testimony and written comment
the river's flow