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: 'a vase with purple sand and flowers inside'. Reverse all words of length '4' in the given sentence.

SOLUTION: a esav htiw purple dnas and flowers inside

PROBLEM: Sentence: 'the bicyclists race toward an old brick church'. Reverse all words of length '2' in the given sentence.

SOLUTION: the bicyclists race toward na old brick church

PROBLEM: Sentence: 'a boy uses a mouse and looks at a laptop on a wooden desk'. Reverse all words of length '2' in the given sentence.

SOLUTION:
a boy uses a mouse and looks ta a laptop no a wooden desk