pre-colon-part: post-colon-part is a format which is often used in titles of papers. In all of the instances I have seen, the first part is an informative phrase, a (fictitious) example of which may be
Optimal consensus control of drone swarms: a game-theoretic approach.
But, I am wondering whether there are instances of papers# first parts of whose colon-wise titles are questions; as another fake example, something like:
Constructive or destructive?: Implications on the effectiveness of my vaccine on the mutated coronavirus
I just tried to look up potential occurrences of the pattern
pre-colon-part?: post-colon-part in Google Scholar by searching "?:". However, my query yields nothing. Has anyone already encountered such instances in the scientific literature?
# I am preferably interested in the potential instances which are composed by English native speakers, and/or published in prestigious journals.