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: 'a tall clock tower with a sky background'. Reverse all words of length '10' in the given sentence.
a tall clock tower with a sky dnuorgkcab

Sentence: 'a gentleman and child in a vintage picture with a horse'. Reverse all words of length '4' in the given sentence.
a gentleman and child in a vintage picture htiw a horse

Sentence: 'a train going down a track that splits in two'. Reverse all words of length '4' in the given sentence.

a train going nwod a track taht splits in two