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 riding skis down a snow covered slope'. Reverse all words of length '5' in the given sentence.
a man riding skis down a snow covered epols

Sentence: 'a very small shiny metal cup with some food in it'. Reverse all words of length '4' in the given sentence.
a yrev small shiny metal cup htiw emos doof in it

Sentence: 'a woman is cross country skiing through a tree lined path'. Reverse all words of length '5' in the given sentence.

a namow is ssorc country skiing through a tree denil path