About: http://webisa.webdatacommons.org/324030626

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	It covers the trouble-shooting of electrical and mechanical systems, auxiliary systems and operating controls; the review and diagnosing of problems related to burners, including oil and gas controls and safety.
http://www.w3.org/ns/prov#wasQuotedFrom	issuu.com