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 person sitting at a desk by an open laptop'. Remove all words of length '4' in the given sentence.

A: a person sitting at a by an laptop
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Q: Sentence: 'a person is walking down the beach holding a surfboard'. Remove all words of length '3' in the given sentence.

A: a person is walking down beach holding a surfboard
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Q: Sentence: 'a man in a wet suit riding a wave on a surfboard'. Remove all words of length '9' in the given sentence.

A:
a man in a wet suit riding a wave on a
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