<https://surveyinfoanalytics.com/#/schema/person/image/>
<http://schema.org/contentUrl>
<https://secure.gravatar.com/avatar/0474b14d848a44492b0a8783248e721c?s=96&d=mm&r=g>
<https://surveyinfoanalytics.com/how-to-design-a-survey/>