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.

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

Sentence: 'a red and white jet on a runway and brown grass'. Remove all words of length '6' in the given sentence.
a red and white jet on a and brown grass

Sentence: 'a smart car at a red light in sydney australia'. Remove all words of length '3' in the given sentence.

a smart at a light in sydney australia