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 girl that looks sad sitting on the side of a street'. Remove all words of length '2' in the given sentence.
a girl that looks sad sitting the side a street

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.
a hydrant an out of service and a dog in the background

Sentence: 'a skateboarder up on a ramp coming down'. Remove all words of length '12' in the given sentence.

a up on a ramp coming down