
Are the following mentions coreferent?:
<m> tsunami warning </m> in Indonesias - Aceh - USGS A powerful 6. 1 - magnitude earthquake struck the Indonesian province of Aceh with no tsunami warning issued. 
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<m> warning </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. 