
Are the following mentions coreferent?:
<m> 6 . 1 - magnitude quake </m> in A powerful 6. 1 - magnitude earthquake struck the Indonesian province of Aceh with no tsunami warning issued, the US Geological Survey said, sending people running into the streets in panic. There were no immediate reports of damage after the quake struck inland at a depth of just 10 kilometres ( 6. 2 miles ), 55 kilometres south of Bireun and 72 kilometres southeast of Reuleuet, said the USGS. A massive quake struck off Aceh in 2004, sending a tsunami that killed 170, 000 people in the province on Sumatra and tens of thousands more in countries around the Indian Ocean. 
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<m> 7.5 magnitude </m> in As aid started to arrive, hundreds of aftershocks continued to rattle the coastal city which was hit by the 7.6 and 7.5 magnitude quakes early on Sunday, cutting power and prompting a brief tsunami warning. 