<https://www.blelighting.co.uk/lighting-and-power-products/emergency-lighting/bulkheads/b3l-led-emergency-bulkheads#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.blelighting.co.uk/lighting-and-power-products/emergency-lighting/bulkheads/b3l-led-emergency-bulkheads?v=79cba1185463>