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.

Sentence: 'many people flying kites in front of the white house in washington dc'. Reverse all words of length '4' in the given sentence.
ynam people flying kites in front of the white house in washington dc

Sentence: 'a clock tower with a weather vein that is lit up'. Reverse all words of length '7' in the given sentence.
a clock tower with a rehtaew vein that is lit up

Sentence: 'a towel hangs above the end of a bathtub'. Reverse all words of length '5' in the given sentence.

a lewot sgnah evoba the end of a bathtub