In this task, you need to reverse all words of a given length in the sentence. The number of letters in a word determine its length. For example, the length of the word "apple" is 5.

Sentence: 'an old church with two bell towers is pictured'. Reverse all words of length '8' in the given sentence.
an old church with two bell towers is derutcip

Sentence: 'a computer keyboard and mouse sit on a desk'. Reverse all words of length '5' in the given sentence.
a computer keyboard and esuom sit on a desk

Sentence: 'a jet is flying against a mostly clear sky'. Reverse all words of length '6' in the given sentence.

a jet is gniylf against a yltsom clear sky