instruction:
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.
question:
Sentence: 'a bucket in a dingy looking cement walled bathroom'. Reverse all words of length '8' in the given sentence.
answer:
a bucket in a dingy looking cement walled moorhtab


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


question:
Sentence: 'a person with a red umbrella walks down a boardwalk'. Reverse all words of length '4' in the given sentence.
answer:

a person htiw a red umbrella walks nwod a boardwalk