TASK DEFINITION: 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.
PROBLEM: Sentence: 'small blue and red bird standing on rear of zebra'. Reverse all words of length '8' in the given sentence.

SOLUTION: small blue and red bird gnidnats on rear of zebra

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

SOLUTION: a computer keyboard and esuom sit on a desk

PROBLEM: Sentence: 'a woman smiles in her stainless steel and tile kitchen'. Reverse all words of length '3' in the given sentence.

SOLUTION:
a woman smiles in reh stainless steel dna tile kitchen