Further, it is important for us to begin supplementing our oil use with renewable resources.
(us; to begin; supplementing our oil use with renewable resources) Context(us to begin,List([29, 40))):(us; to begin supplementing; our oil use; with renewable resources)
us to begin,List([29, 40))
us us
to begin to begin supplementing
supplementing our oil use with renewable resources
our oil use with renewable resources