
Are the following mentions coreferent?:
<m> 4 . 6 - magnitude earthquake </m> in Lake County's Cobb Mountain community was shaken awake early Thursday morning by a magnitude 4. 6 earthquake that startled even folks accustomed to seismic activity because of its size. While shakers around magnitude 2 and 3 are common to the area, Thursday's 2 : 09 a.m. jolt lasted longer and proved stronger than usual. The U.S. Geological Survey reported that the quake was centered about 3 miles southwest of Cobb, in a seismically active area near The Geysers geothermal steamfields. 
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<m> 4 . 6 earthquake </m> in A magnitude 4. 6 earthquake struck Northern California on Thursday morning, The temblor struck about 26 miles north of Santa Rosa in the Geysers area. There were no reports of damage or injuries, but there were some apparent aftershocks. It was felt over a wide area of the region, including in Santa Rosa, Marin County and Vallejo, according to the U. S. Geological Survey. 