    Sentence |: Regional utility Tohoku Electric Power Co Inc  said an 825,000-kilowatt ( kW ) nuclear reactor , the  Onagawa No.3 unit near Sendai automatically shut down  due to the quake.    Sentence 2: Japan 's Tohoku Electric Power Co Inc said an  825,000-kilowatt ( kW ) nuclear reactor , the Onagawa  No.3 unit in northern Japan , automatically shut down  due to the quake.