
Are the following mentions coreferent?:
<m> struck </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. 
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<m> Shakes Up </m> in Shakes Up - North Bay March 14, 2013 5 : 22 AM An earthquake with a preliminary magnitude of 4. 6 was recorded in the North Bay Thursday morning, according to the U. S. Geological Survey. 