About: http://webisa.webdatacommons.org/452398688

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	The only one I can think of is swimming, especially the backstroke -- you need to use your stomach muscles to keep your body in the right position so that you do not sink.
http://www.w3.org/ns/prov#wasQuotedFrom	peertrainer.com