How to set priority order to Open Graph images for links that are inserted in comments. (Not sharing or wall posts.)

Question

When pasting a link to a page within a comment, not directly as a wall post, Facebook defaults to choosing a thumbnail image, without users being able to choose the relevant

Answer 1

As per the instruction at ogp.me...

Arrays
If a tag can have multiple values, just put multiple versions of the same tag on your page. The first tag (from top to bottom) is given preference during conflicts.