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: 'some people are posing for a picture in the snow mountain'. Remove all words of length '7' in the given sentence.

Ex Output:
some people are posing for a in the snow mountain


Ex Input:
Sentence: 'a toddler standing next to a sheep pen'. Remove all words of length '4' in the given sentence.

Ex Output:
a toddler standing to a sheep pen


Ex Input:
Sentence: 'a train with passengers is passing by some onlookers'. Remove all words of length '1' in the given sentence.

Ex Output:

train with passengers is passing by some onlookers