
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> earthquake </m> in A light earthquake has struck Northern California, and there are no reports of injuries or damage. The U.S. Geological Survey says the 4.4-magnitude temblor on Sunday at 9:27 a.m. was centered 23 miles north of Santa Rosa, and two miles from The Geysers. 