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.

Q: Sentence: 'a black bear sitting on top of a fallen log at a zoo'. Remove all words of length '7' in the given sentence.

A: a black bear on top of a fallen log at a zoo
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Q: 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: a hydrant an out of service and a dog in the background
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Q: Sentence: 'a fire hydrant sits next to a sidewalk in front of a suburban business'. Remove all words of length '5' in the given sentence.

A:
a fire hydrant sits next to a sidewalk in of a suburban business
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