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: 'a woman sitting at an outside patio table under a blue umbrella eating food'. Reverse all words of length '7' in the given sentence.
a woman gnittis at an edistuo patio table under a blue umbrella eating food

Sentence: 'a person in a rowboat under an umbrella'. Reverse all words of length '5' in the given sentence.
a person in a rowboat rednu an umbrella

Sentence: 'a person in the water on a surfboard'. Reverse all words of length '5' in the given sentence.

a person in the retaw on a surfboard