<http://schema.org/description>
"Some runners find the only time they have to run is in the darkness of early morning or evening. If you have to run in the dark or low-light conditions, make sure to follow these safety tips."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.verywell.com/safety-tips-for-running-in-the-dark-2911824>