| http://www.w3.org/ns/prov#value | - At any given time, numerous space agencies (and historically, militaries) have dozens of such experiments underway.Luckily, delivering food, oxygen, lights and other supplies to the men through boreholes can be readily accomplished, but they remain in constant danger of further collapses, and the potential effects of involuntary isolation has led Chilean officials to invite doctors and psychiatric
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