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.

[EX Q]: Sentence: 'a triangular grouping of jet planes flying in the sky'. Reverse all words of length '3' in the given sentence.
[EX A]: a triangular grouping of tej planes flying in eht yks

[EX Q]: Sentence: 'a person at a zoo looking over the fence of a giraffe enclosure'. Reverse all words of length '6' in the given sentence.
[EX A]: a nosrep at a zoo looking over the fence of a giraffe enclosure

[EX Q]: Sentence: 'young man doing skateboarding tricks in a residential area'. Reverse all words of length '11' in the given sentence.
[EX A]:
young man doing skateboarding tricks in a laitnediser area