You use concerning to indicate what a question or piece of information is about.
FORMAL prep oft n PREP n
...various questions concerning pollution and the environment.
Translation English Cobuild Collins Dictionary
about, anent (Scot.) apropos of, as regards, as to, in the matter of, on the subject of, re, regarding, relating to, respecting, touching, with reference to
English Collins Dictionary - English synonyms & Thesaurus
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