
Are the following mentions coreferent?:
<m> shaken awake </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. 
</s>
<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. 