
Are the following mentions coreferent?:
<m> California earthquake </m> in A California earthquake today 2013 has erupted outside Santa Rosa. The strong and shallow quake began in the predawn morning hours today Thursday, March 14, 2013. Officials tell news that a 4. 6 magnitude California earthquake began today shortly after 2 : 09 am PST. The quake was northwest of Sacramento and Woodland and Roseville, north of Santa Rosa and San Francisco, and south of Mendocino National Forest. 
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<m> magnitude 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. 