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: 'there is no image to provide a caption for'. Reverse all words of length '7' in the given sentence.

SOLUTION: there is no image to edivorp a noitpac for

PROBLEM: Sentence: 'a red and white jet is taking off and some buildings'. Reverse all words of length '2' in the given sentence.

SOLUTION: a red and white jet si taking off and some buildings

PROBLEM: Sentence: 'a protester holds his sign as he checks his cell phone'. Reverse all words of length '6' in the given sentence.

SOLUTION:
a protester holds his sign as he skcehc his cell phone