<http://webisa.webdatacommons.org/prov/44922920>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/242202492> .
<http://webisa.webdatacommons.org/242202492>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/242202492>	<http://www.w3.org/ns/prov#value>	"Experts in sports dentistry strongly recommend using mouthguards because it is essential for preventing different kinds of injuries sustained while carrying out such activities as contact and non-contact sports .Such sports as football, boxing, martial arts, and hockey can be placed in the category of contact sports." .
<http://webisa.webdatacommons.org/242202492>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<syl.com> .