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 pile of oranges sitting next to a pile of green apples'. Remove all words of length '6' in the given sentence.
[A]: a pile of oranges sitting next to a pile of green


[Q]: Sentence: 'a fire hydrant sits off a city street'. Remove all words of length '4' in the given sentence.
[A]: a hydrant off a street


[Q]: Sentence: 'a man smiles as he uses his white apple mac book'. Remove all words of length '3' in the given sentence.
[A]:
a smiles as he uses white apple book