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 herd of sheep grazing on a green grass covered hill'. Remove all words of length '5' in the given sentence.

A: a herd of grazing on a covered hill
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Q: Sentence: 'two brown and white dogs are playing frisbee'. Remove all words of length '7' in the given sentence.

A: two brown and white dogs are
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Q: Sentence: 'a woman is throwing a frisbee on the grass'. Remove all words of length '3' in the given sentence.

A:
a woman is throwing a frisbee on grass
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