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: 'this amtrak train is making its way down the tracks'. Remove all words of length '4' in the given sentence.

A: amtrak train is making its way the tracks
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Q: Sentence: 'a very nice looking train in the dark'. Remove all words of length '7' in the given sentence.

A: a very nice train in the dark
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Q: Sentence: 'a bull is waking down a street next to a concrete fence'. Remove all words of length '2' in the given sentence.

A:
a bull waking down a street next a concrete fence
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