As an API consumer I want an API query which returns just the references of a page
e.g.
https://en.wikipedia.org/api/rest_v1/page/mobile-sections-references/San%20Francisco
Any section which has the class mw-references in it would be served by the endpoint in a sections array
If no references are available for a page the array will be empty.
Given revision id is important when determining references, we will also need to expose this and all other endpoints on a revision basis.
e.g.
https://en.wikipedia.org/api/rest_v1/revision/mobile-sections-references/<revid>