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 man is riding a motorcycle down the street'. Remove all words of length '3' in the given sentence.

Ex Output:
a is riding a motorcycle down street


Ex Input:
Sentence: 'two small children ski down a snowy tree lined slope'. Remove all words of length '4' in the given sentence.

Ex Output:
two small children ski a snowy lined slope


Ex Input:
Sentence: 'a photograph of a book about how to use a camera phone'. Remove all words of length '4' in the given sentence.

Ex Output:

a photograph of a about how to use a camera phone