instruction:
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.
question:
Sentence: 'a snowy hill with a tree lined area'. Reverse all words of length '4' in the given sentence.
answer:
a snowy llih htiw a eert lined aera


question:
Sentence: 'a woman about to serve a tennis ball'. Reverse all words of length '2' in the given sentence.
answer:
a woman about ot serve a tennis ball


question:
Sentence: 'a table with stacks of books on it with a mouse keyboard and a monitor on top of them'. Reverse all words of length '4' in the given sentence.
answer:

a table htiw stacks of books on it htiw a mouse keyboard and a monitor on top of meht