| http://www.w3.org/ns/prov#value | - The team predicts the system will offer a one-week warning for a 50-yard diameter asteroid or ???city killer??? and three weeks for a 150 yard-diameter ???county killer.??? ???That???s enough time to evacuate the area of people, take measures to protect buildings and other infrastructure, and be alert to a tsunami danger generated by ocean impacts,??? Tonry said.
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