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 black bear sitting on top of a fallen log at a zoo'. Remove all words of length '7' in the given sentence.
[A]: a black bear on top of a fallen log at a zoo


[Q]: Sentence: 'a silver train traveling past a tall brick building'. Remove all words of length '1' in the given sentence.
[A]: silver train traveling past tall brick building


[Q]: Sentence: 'an airplane sits parked on a grassy runway'. Remove all words of length '2' in the given sentence.
[A]:
airplane sits parked a grassy runway