... Observing pouring rain and a river's steadily rising water level is sufficient to make a prudent person take measures against possible flooding - without knowing the exact water level, the rate of change, or the time the river might flood."
(the river; might flood; T:the time) (Observing pouring rain and a river's steadily rising water level; is; sufficient to make a prudent person take measures against possible flooding - without knowing the exact water level)
the river Observing pouring rain and a river's steadily rising water level
might flood is
T:the time
sufficient to make a prudent person take measures against possible flooding - without knowing the exact water level