In this task, you need to remove 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.

Ex Input:
Sentence: 'a steam clock on the side of the street attracts onlookers'. Remove all words of length '9' in the given sentence.

Ex Output:
a steam clock on the side of the street attracts


Ex Input:
Sentence: 'a close up of a person wearing a suit and tie operating a cell phone'. Remove all words of length '5' in the given sentence.

Ex Output:
a up of a person wearing a suit and tie operating a cell


Ex Input:
Sentence: 'a group of elephants in grassy area next to trees'. Remove all words of length '4' in the given sentence.

Ex Output:

a group of elephants in grassy to trees