About: http://webisa.webdatacommons.org/311208788

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	They might be round because if the manholes were, say, square ??? or for that matter, any shape other than a circle ??? they could easily drop through the hole.
http://www.w3.org/ns/prov#wasQuotedFrom	jobsarkansas.com