| http://www.w3.org/ns/prov#value | - Three of the families moved during the study, so the researchers tested two houses plus hotel rooms for each of them.The volunteers swabbed their hands, noses and feet, as well as floors, counters and other surfaces in their homes.???You could theoretically predict whether a person has lived in this location, and how recently, with very good accuracy.The analysis confirmed what scientists have le
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