Generate Tag for Video Caption

Description

You are given a string caption representing the caption for a video.

The following actions must be performed in order to generate a valid tag for the video:

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Combine all words in the string into a single camelCase string prefixed with '#'. A camelCase string is one where the first letter of all words except the first one is capitalized. All characters after the first character in each word must be lowercase.



-

Remove all characters that are not an English letter, except the first '#'.



-

Truncate the result to a maximum of 100 characters.



Return the tag after performing the actions on caption.