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.

Example Input: Sentence: 'a green apple and knife on dark wooden stairs'. Reverse all words of length '3' in the given sentence.
Example Output: a green apple dna knife on dark wooden stairs

Example Input: Sentence: 'a person at a zoo looking over the fence of a giraffe enclosure'. Reverse all words of length '6' in the given sentence.
Example Output: a nosrep at a zoo looking over the fence of a giraffe enclosure

Example Input: Sentence: 'a black and white photo of two female skiers in a mountainous landscape'. Reverse all words of length '3' in the given sentence.
Example Output:
a black dna white photo of owt female skiers in a mountainous landscape