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.
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Question: Sentence: 'boats sailing along a river next to a cliff with buildings on it'. Remove all words of length '4' in the given sentence.

Answer: boats sailing along a river to a cliff buildings on it


Question: Sentence: 'a group of men riding skis down a snow covered slope'. Remove all words of length '6' in the given sentence.

Answer: a group of men skis down a snow covered slope


Question: Sentence: 'a skieer does a small jump off of a snow ramp'. Remove all words of length '4' in the given sentence.

Answer:
a skieer a small off of a