Thanks.
About the Wikipedia issue.
From Wikipedia: "Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization."
https://en.wikipedia.org/wiki/Creative_Commons_license
https://en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_At...
From that text: "Subject to the terms and conditions of this License, Licensor hereby grants You a worldwide, royalty-free, non-exclusive, perpetual (for the duration of the applicable copyright) license to exercise the rights in the Work as stated below"