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 group of children standing next to a soldier'. Remove all words of length '2' in the given sentence.

Ex Output:
a group children standing next a soldier


Ex Input:
Sentence: 'a fire hydrant with an out of service sign and a dog in the background'. Remove all words of length '4' in the given sentence.

Ex Output:
a hydrant an out of service and a dog in the background


Ex Input:
Sentence: 'a lady depressing a button while holding a device in her hand'. Remove all words of length '6' in the given sentence.

Ex Output:

a lady depressing a while holding a in her hand