About: http://webisa.webdatacommons.org/341882009

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	As horse's joints in their back & hocks do not 'close' until 4-5yo on average, weightbearing & high impact work prior to that can cause damage, especially in their 'lower' back.
http://www.w3.org/ns/prov#wasQuotedFrom	horseforum.com