The first letter's capitalisation often affects whether the result will be a rich result or not. Examples are "Wording" returns a rich definition block (wordapi) as I would want, as opposed to when searching "wording". "Tom scott" returns a rich wiki block but "tom scott" does not. "Top gun" returns a rich block, but not "top gun". And so on. On the other hand, "Lens" and "lens" gives the same result.
I expect rich blocks to show up irrespective of the first character's case.
