Wikidata search for L:Anna matches many lexemes (due to their forms containing "anna" or "Anna") but it would be nice to only match the "proper noun" ("Anna") versions with upper-case first letters. That could be handled either by case-sensitivity in the search or by limiting the match to only lexemes with lexical category "proper noun" (Q147276).
See: T195411: Create a page to list all forms with a certain spelling