<http://schema.org/description>
"Abby from the Google Maps team posted in the Google Maps Help forum asking Google Maps users who are interested in custom maps to sign up for a research study.Abby said if you use My Maps and Maps Eng"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-custom-maps-survey-17379.html>