
Are the following mentions coreferent?:
<m> earthquakes </m> in Indonesia's Meteorology and Geophysics Agency ( BMG) said that there were two powerful earthquakes which flattened buildings and killed at least one person. 
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<m> 6 . 1 - magnitude earthquake </m> in Indonesia's northwestern province of Aceh today, causing buildings to collapse and injuring at least 50 people. A strong 6. 1 - magnitude earthquake struck Indonesia's northwestern province of Aceh today, causing buildings to collapse and injuring at least 50 people. 