
Are the following mentions coreferent?:
<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. 
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<m> 4 . 6 - magnitude earthquake </m> in A 4. 6 - magnitude earthquake rattled Northern California overnight Thursday, shaking residents from San Francisco to north of Sacramento. The temblor struck at 2 : 09 a.m. and was centered in Geyserville, about 20 miles north of Santa Rosa, according to the U. S. Geological Survey. USGS measurements indicated at least 20 smaller earthquakes followed throughout the morning. 