<https://www.droneguide.news/hollystone-hs700-camera-drone-assembly-demonstration-review-with-pros-cons/#primaryimage>
<http://schema.org/height>
"720"^^<http://www.w3.org/2001/XMLSchema#integer>
<https://www.droneguide.news/hollystone-hs700-camera-drone-assembly-demonstration-review-with-pros-cons/>