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 man and women embracing each other in front of trees'. Reverse all words of length '4' in the given sentence.
a man and women embracing hcae other in front of trees

Sentence: 'grown black cat sitting in a blue chair in a living room'. Reverse all words of length '4' in the given sentence.
grown black cat sitting in a eulb chair in a living moor

Sentence: 'a bicyclist speaks to two police officers on horseback'. Reverse all words of length '8' in the given sentence.

a bicyclist speaks to two police sreciffo on horseback