About: http://webisa.webdatacommons.org/202642066

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	From 10:30 until 6:30 or 7 AM the longest sleep period is about 2 hours, but the most common length of sleep is about 1 to 1 and a half hours.
http://www.w3.org/ns/prov#wasQuotedFrom	urbanmamas.com