Coal production declined as many industries that used coal for power switched to other energy sources.
(Coal production; declined; T:as many industries that used coal for power switched to other energy sources) (many industries that used coal for power; switched; to other energy sources) Context(many industries that used coal for power switched,List([28, 77))):(many industries; used; coal; for power)
many industries that used coal for power switched,List([28, 77))
Coal production many industries that used coal for power many industries
declined switched used
T:as many industries that used coal for power switched to other energy sources
to other energy sources
coal for power